From 30ac7817cf900e30256a8e3becb2cfeb3a20f418 Mon Sep 17 00:00:00 2001
From: Ludovic Stephan <ludovic.stephan@ens.fr>
Date: Sat, 19 Sep 2020 12:10:03 +0200
Subject: [PATCH] Switch to minifier

---
 kfet/static/kfet/js/kpsul.js                  |    3 -
 kfet/static/kfet/js/kpsul.min.js              |    1 +
 kfet/static/kfet/src/kpsul/Makefile           |   25 +
 kfet/static/kfet/src/kpsul/kpsul.js           |    3 +
 kfet/static/kfet/src/kpsul/kpsul.src.js       | 4087 +++++++++++++++++
 .../kfet/src/{ => kpsul/libs}/backbone.js     |    0
 .../kfet/src/{ => kpsul/libs}/underscore.js   |    0
 .../kpsul/managers/account_manager.js         |    8 +-
 .../kfet/{js => src}/kpsul/models/account.js  |    2 -
 kfet/templates/kfet/kpsul.html                |    4 +-
 10 files changed, 4119 insertions(+), 14 deletions(-)
 delete mode 100644 kfet/static/kfet/js/kpsul.js
 create mode 100644 kfet/static/kfet/js/kpsul.min.js
 create mode 100644 kfet/static/kfet/src/kpsul/Makefile
 create mode 100644 kfet/static/kfet/src/kpsul/kpsul.js
 create mode 100644 kfet/static/kfet/src/kpsul/kpsul.src.js
 rename kfet/static/kfet/src/{ => kpsul/libs}/backbone.js (100%)
 rename kfet/static/kfet/src/{ => kpsul/libs}/underscore.js (100%)
 rename kfet/static/kfet/{js => src}/kpsul/managers/account_manager.js (96%)
 rename kfet/static/kfet/{js => src}/kpsul/models/account.js (99%)

diff --git a/kfet/static/kfet/js/kpsul.js b/kfet/static/kfet/js/kpsul.js
deleted file mode 100644
index 66577ddb..00000000
--- a/kfet/static/kfet/js/kpsul.js
+++ /dev/null
@@ -1,3 +0,0 @@
-import AccountManager from "./kpsul/managers/account_manager.js"
-
-self.account_manager = new AccountManager();
\ No newline at end of file
diff --git a/kfet/static/kfet/js/kpsul.min.js b/kfet/static/kfet/js/kpsul.min.js
new file mode 100644
index 00000000..6e2037d8
--- /dev/null
+++ b/kfet/static/kfet/js/kpsul.min.js
@@ -0,0 +1 @@
+(function(){var root=typeof self=="object"&&self.self===self&&self||typeof global=="object"&&global.global===global&&global||this||{};var previousUnderscore=root._;var ArrayProto=Array.prototype,ObjProto=Object.prototype;var SymbolProto=typeof Symbol!=="undefined"?Symbol.prototype:null;var push=ArrayProto.push,slice=ArrayProto.slice,toString=ObjProto.toString,hasOwnProperty=ObjProto.hasOwnProperty;var nativeIsArray=Array.isArray,nativeKeys=Object.keys,nativeCreate=Object.create;var Ctor=function(){};var _=function(obj){if(obj instanceof _)return obj;if(!(this instanceof _))return new _(obj);this._wrapped=obj};if(typeof exports!="undefined"&&!exports.nodeType){if(typeof module!="undefined"&&!module.nodeType&&module.exports){exports=module.exports=_}exports._=_}else{root._=_}_.VERSION="1.9.1";var optimizeCb=function(func,context,argCount){if(context===void 0)return func;switch(argCount==null?3:argCount){case 1:return function(value){return func.call(context,value)};case 3:return function(value,index,collection){return func.call(context,value,index,collection)};case 4:return function(accumulator,value,index,collection){return func.call(context,accumulator,value,index,collection)}}return function(){return func.apply(context,arguments)}};var builtinIteratee;var cb=function(value,context,argCount){if(_.iteratee!==builtinIteratee)return _.iteratee(value,context);if(value==null)return _.identity;if(_.isFunction(value))return optimizeCb(value,context,argCount);if(_.isObject(value)&&!_.isArray(value))return _.matcher(value);return _.property(value)};_.iteratee=builtinIteratee=function(value,context){return cb(value,context,Infinity)};var restArguments=function(func,startIndex){startIndex=startIndex==null?func.length-1:+startIndex;return function(){var length=Math.max(arguments.length-startIndex,0),rest=Array(length),index=0;for(;index<length;index++){rest[index]=arguments[index+startIndex]}switch(startIndex){case 0:return func.call(this,rest);case 1:return func.call(this,arguments[0],rest);case 2:return func.call(this,arguments[0],arguments[1],rest)}var args=Array(startIndex+1);for(index=0;index<startIndex;index++){args[index]=arguments[index]}args[startIndex]=rest;return func.apply(this,args)}};var baseCreate=function(prototype){if(!_.isObject(prototype))return{};if(nativeCreate)return nativeCreate(prototype);Ctor.prototype=prototype;var result=new Ctor;Ctor.prototype=null;return result};var shallowProperty=function(key){return function(obj){return obj==null?void 0:obj[key]}};var has=function(obj,path){return obj!=null&&hasOwnProperty.call(obj,path)};var deepGet=function(obj,path){var length=path.length;for(var i=0;i<length;i++){if(obj==null)return void 0;obj=obj[path[i]]}return length?obj:void 0};var MAX_ARRAY_INDEX=Math.pow(2,53)-1;var getLength=shallowProperty("length");var isArrayLike=function(collection){var length=getLength(collection);return typeof length=="number"&&length>=0&&length<=MAX_ARRAY_INDEX};_.each=_.forEach=function(obj,iteratee,context){iteratee=optimizeCb(iteratee,context);var i,length;if(isArrayLike(obj)){for(i=0,length=obj.length;i<length;i++){iteratee(obj[i],i,obj)}}else{var keys=_.keys(obj);for(i=0,length=keys.length;i<length;i++){iteratee(obj[keys[i]],keys[i],obj)}}return obj};_.map=_.collect=function(obj,iteratee,context){iteratee=cb(iteratee,context);var keys=!isArrayLike(obj)&&_.keys(obj),length=(keys||obj).length,results=Array(length);for(var index=0;index<length;index++){var currentKey=keys?keys[index]:index;results[index]=iteratee(obj[currentKey],currentKey,obj)}return results};var createReduce=function(dir){var reducer=function(obj,iteratee,memo,initial){var keys=!isArrayLike(obj)&&_.keys(obj),length=(keys||obj).length,index=dir>0?0:length-1;if(!initial){memo=obj[keys?keys[index]:index];index+=dir}for(;index>=0&&index<length;index+=dir){var currentKey=keys?keys[index]:index;memo=iteratee(memo,obj[currentKey],currentKey,obj)}return memo};return function(obj,iteratee,memo,context){var initial=arguments.length>=3;return reducer(obj,optimizeCb(iteratee,context,4),memo,initial)}};_.reduce=_.foldl=_.inject=createReduce(1);_.reduceRight=_.foldr=createReduce(-1);_.find=_.detect=function(obj,predicate,context){var keyFinder=isArrayLike(obj)?_.findIndex:_.findKey;var key=keyFinder(obj,predicate,context);if(key!==void 0&&key!==-1)return obj[key]};_.filter=_.select=function(obj,predicate,context){var results=[];predicate=cb(predicate,context);_.each(obj,(function(value,index,list){if(predicate(value,index,list))results.push(value)}));return results};_.reject=function(obj,predicate,context){return _.filter(obj,_.negate(cb(predicate)),context)};_.every=_.all=function(obj,predicate,context){predicate=cb(predicate,context);var keys=!isArrayLike(obj)&&_.keys(obj),length=(keys||obj).length;for(var index=0;index<length;index++){var currentKey=keys?keys[index]:index;if(!predicate(obj[currentKey],currentKey,obj))return false}return true};_.some=_.any=function(obj,predicate,context){predicate=cb(predicate,context);var keys=!isArrayLike(obj)&&_.keys(obj),length=(keys||obj).length;for(var index=0;index<length;index++){var currentKey=keys?keys[index]:index;if(predicate(obj[currentKey],currentKey,obj))return true}return false};_.contains=_.includes=_.include=function(obj,item,fromIndex,guard){if(!isArrayLike(obj))obj=_.values(obj);if(typeof fromIndex!="number"||guard)fromIndex=0;return _.indexOf(obj,item,fromIndex)>=0};_.invoke=restArguments((function(obj,path,args){var contextPath,func;if(_.isFunction(path)){func=path}else if(_.isArray(path)){contextPath=path.slice(0,-1);path=path[path.length-1]}return _.map(obj,(function(context){var method=func;if(!method){if(contextPath&&contextPath.length){context=deepGet(context,contextPath)}if(context==null)return void 0;method=context[path]}return method==null?method:method.apply(context,args)}))}));_.pluck=function(obj,key){return _.map(obj,_.property(key))};_.where=function(obj,attrs){return _.filter(obj,_.matcher(attrs))};_.findWhere=function(obj,attrs){return _.find(obj,_.matcher(attrs))};_.max=function(obj,iteratee,context){var result=-Infinity,lastComputed=-Infinity,value,computed;if(iteratee==null||typeof iteratee=="number"&&typeof obj[0]!="object"&&obj!=null){obj=isArrayLike(obj)?obj:_.values(obj);for(var i=0,length=obj.length;i<length;i++){value=obj[i];if(value!=null&&value>result){result=value}}}else{iteratee=cb(iteratee,context);_.each(obj,(function(v,index,list){computed=iteratee(v,index,list);if(computed>lastComputed||computed===-Infinity&&result===-Infinity){result=v;lastComputed=computed}}))}return result};_.min=function(obj,iteratee,context){var result=Infinity,lastComputed=Infinity,value,computed;if(iteratee==null||typeof iteratee=="number"&&typeof obj[0]!="object"&&obj!=null){obj=isArrayLike(obj)?obj:_.values(obj);for(var i=0,length=obj.length;i<length;i++){value=obj[i];if(value!=null&&value<result){result=value}}}else{iteratee=cb(iteratee,context);_.each(obj,(function(v,index,list){computed=iteratee(v,index,list);if(computed<lastComputed||computed===Infinity&&result===Infinity){result=v;lastComputed=computed}}))}return result};_.shuffle=function(obj){return _.sample(obj,Infinity)};_.sample=function(obj,n,guard){if(n==null||guard){if(!isArrayLike(obj))obj=_.values(obj);return obj[_.random(obj.length-1)]}var sample=isArrayLike(obj)?_.clone(obj):_.values(obj);var length=getLength(sample);n=Math.max(Math.min(n,length),0);var last=length-1;for(var index=0;index<n;index++){var rand=_.random(index,last);var temp=sample[index];sample[index]=sample[rand];sample[rand]=temp}return sample.slice(0,n)};_.sortBy=function(obj,iteratee,context){var index=0;iteratee=cb(iteratee,context);return _.pluck(_.map(obj,(function(value,key,list){return{value:value,index:index++,criteria:iteratee(value,key,list)}})).sort((function(left,right){var a=left.criteria;var b=right.criteria;if(a!==b){if(a>b||a===void 0)return 1;if(a<b||b===void 0)return-1}return left.index-right.index})),"value")};var group=function(behavior,partition){return function(obj,iteratee,context){var result=partition?[[],[]]:{};iteratee=cb(iteratee,context);_.each(obj,(function(value,index){var key=iteratee(value,index,obj);behavior(result,value,key)}));return result}};_.groupBy=group((function(result,value,key){if(has(result,key))result[key].push(value);else result[key]=[value]}));_.indexBy=group((function(result,value,key){result[key]=value}));_.countBy=group((function(result,value,key){if(has(result,key))result[key]++;else result[key]=1}));var reStrSymbol=/[^\ud800-\udfff]|[\ud800-\udbff][\udc00-\udfff]|[\ud800-\udfff]/g;_.toArray=function(obj){if(!obj)return[];if(_.isArray(obj))return slice.call(obj);if(_.isString(obj)){return obj.match(reStrSymbol)}if(isArrayLike(obj))return _.map(obj,_.identity);return _.values(obj)};_.size=function(obj){if(obj==null)return 0;return isArrayLike(obj)?obj.length:_.keys(obj).length};_.partition=group((function(result,value,pass){result[pass?0:1].push(value)}),true);_.first=_.head=_.take=function(array,n,guard){if(array==null||array.length<1)return n==null?void 0:[];if(n==null||guard)return array[0];return _.initial(array,array.length-n)};_.initial=function(array,n,guard){return slice.call(array,0,Math.max(0,array.length-(n==null||guard?1:n)))};_.last=function(array,n,guard){if(array==null||array.length<1)return n==null?void 0:[];if(n==null||guard)return array[array.length-1];return _.rest(array,Math.max(0,array.length-n))};_.rest=_.tail=_.drop=function(array,n,guard){return slice.call(array,n==null||guard?1:n)};_.compact=function(array){return _.filter(array,Boolean)};var flatten=function(input,shallow,strict,output){output=output||[];var idx=output.length;for(var i=0,length=getLength(input);i<length;i++){var value=input[i];if(isArrayLike(value)&&(_.isArray(value)||_.isArguments(value))){if(shallow){var j=0,len=value.length;while(j<len)output[idx++]=value[j++]}else{flatten(value,shallow,strict,output);idx=output.length}}else if(!strict){output[idx++]=value}}return output};_.flatten=function(array,shallow){return flatten(array,shallow,false)};_.without=restArguments((function(array,otherArrays){return _.difference(array,otherArrays)}));_.uniq=_.unique=function(array,isSorted,iteratee,context){if(!_.isBoolean(isSorted)){context=iteratee;iteratee=isSorted;isSorted=false}if(iteratee!=null)iteratee=cb(iteratee,context);var result=[];var seen=[];for(var i=0,length=getLength(array);i<length;i++){var value=array[i],computed=iteratee?iteratee(value,i,array):value;if(isSorted&&!iteratee){if(!i||seen!==computed)result.push(value);seen=computed}else if(iteratee){if(!_.contains(seen,computed)){seen.push(computed);result.push(value)}}else if(!_.contains(result,value)){result.push(value)}}return result};_.union=restArguments((function(arrays){return _.uniq(flatten(arrays,true,true))}));_.intersection=function(array){var result=[];var argsLength=arguments.length;for(var i=0,length=getLength(array);i<length;i++){var item=array[i];if(_.contains(result,item))continue;var j;for(j=1;j<argsLength;j++){if(!_.contains(arguments[j],item))break}if(j===argsLength)result.push(item)}return result};_.difference=restArguments((function(array,rest){rest=flatten(rest,true,true);return _.filter(array,(function(value){return!_.contains(rest,value)}))}));_.unzip=function(array){var length=array&&_.max(array,getLength).length||0;var result=Array(length);for(var index=0;index<length;index++){result[index]=_.pluck(array,index)}return result};_.zip=restArguments(_.unzip);_.object=function(list,values){var result={};for(var i=0,length=getLength(list);i<length;i++){if(values){result[list[i]]=values[i]}else{result[list[i][0]]=list[i][1]}}return result};var createPredicateIndexFinder=function(dir){return function(array,predicate,context){predicate=cb(predicate,context);var length=getLength(array);var index=dir>0?0:length-1;for(;index>=0&&index<length;index+=dir){if(predicate(array[index],index,array))return index}return-1}};_.findIndex=createPredicateIndexFinder(1);_.findLastIndex=createPredicateIndexFinder(-1);_.sortedIndex=function(array,obj,iteratee,context){iteratee=cb(iteratee,context,1);var value=iteratee(obj);var low=0,high=getLength(array);while(low<high){var mid=Math.floor((low+high)/2);if(iteratee(array[mid])<value)low=mid+1;else high=mid}return low};var createIndexFinder=function(dir,predicateFind,sortedIndex){return function(array,item,idx){var i=0,length=getLength(array);if(typeof idx=="number"){if(dir>0){i=idx>=0?idx:Math.max(idx+length,i)}else{length=idx>=0?Math.min(idx+1,length):idx+length+1}}else if(sortedIndex&&idx&&length){idx=sortedIndex(array,item);return array[idx]===item?idx:-1}if(item!==item){idx=predicateFind(slice.call(array,i,length),_.isNaN);return idx>=0?idx+i:-1}for(idx=dir>0?i:length-1;idx>=0&&idx<length;idx+=dir){if(array[idx]===item)return idx}return-1}};_.indexOf=createIndexFinder(1,_.findIndex,_.sortedIndex);_.lastIndexOf=createIndexFinder(-1,_.findLastIndex);_.range=function(start,stop,step){if(stop==null){stop=start||0;start=0}if(!step){step=stop<start?-1:1}var length=Math.max(Math.ceil((stop-start)/step),0);var range=Array(length);for(var idx=0;idx<length;idx++,start+=step){range[idx]=start}return range};_.chunk=function(array,count){if(count==null||count<1)return[];var result=[];var i=0,length=array.length;while(i<length){result.push(slice.call(array,i,i+=count))}return result};var executeBound=function(sourceFunc,boundFunc,context,callingContext,args){if(!(callingContext instanceof boundFunc))return sourceFunc.apply(context,args);var self=baseCreate(sourceFunc.prototype);var result=sourceFunc.apply(self,args);if(_.isObject(result))return result;return self};_.bind=restArguments((function(func,context,args){if(!_.isFunction(func))throw new TypeError("Bind must be called on a function");var bound=restArguments((function(callArgs){return executeBound(func,bound,context,this,args.concat(callArgs))}));return bound}));_.partial=restArguments((function(func,boundArgs){var placeholder=_.partial.placeholder;var bound=function(){var position=0,length=boundArgs.length;var args=Array(length);for(var i=0;i<length;i++){args[i]=boundArgs[i]===placeholder?arguments[position++]:boundArgs[i]}while(position<arguments.length)args.push(arguments[position++]);return executeBound(func,bound,this,this,args)};return bound}));_.partial.placeholder=_;_.bindAll=restArguments((function(obj,keys){keys=flatten(keys,false,false);var index=keys.length;if(index<1)throw new Error("bindAll must be passed function names");while(index--){var key=keys[index];obj[key]=_.bind(obj[key],obj)}}));_.memoize=function(func,hasher){var memoize=function(key){var cache=memoize.cache;var address=""+(hasher?hasher.apply(this,arguments):key);if(!has(cache,address))cache[address]=func.apply(this,arguments);return cache[address]};memoize.cache={};return memoize};_.delay=restArguments((function(func,wait,args){return setTimeout((function(){return func.apply(null,args)}),wait)}));_.defer=_.partial(_.delay,_,1);_.throttle=function(func,wait,options){var timeout,context,args,result;var previous=0;if(!options)options={};var later=function(){previous=options.leading===false?0:_.now();timeout=null;result=func.apply(context,args);if(!timeout)context=args=null};var throttled=function(){var now=_.now();if(!previous&&options.leading===false)previous=now;var remaining=wait-(now-previous);context=this;args=arguments;if(remaining<=0||remaining>wait){if(timeout){clearTimeout(timeout);timeout=null}previous=now;result=func.apply(context,args);if(!timeout)context=args=null}else if(!timeout&&options.trailing!==false){timeout=setTimeout(later,remaining)}return result};throttled.cancel=function(){clearTimeout(timeout);previous=0;timeout=context=args=null};return throttled};_.debounce=function(func,wait,immediate){var timeout,result;var later=function(context,args){timeout=null;if(args)result=func.apply(context,args)};var debounced=restArguments((function(args){if(timeout)clearTimeout(timeout);if(immediate){var callNow=!timeout;timeout=setTimeout(later,wait);if(callNow)result=func.apply(this,args)}else{timeout=_.delay(later,wait,this,args)}return result}));debounced.cancel=function(){clearTimeout(timeout);timeout=null};return debounced};_.wrap=function(func,wrapper){return _.partial(wrapper,func)};_.negate=function(predicate){return function(){return!predicate.apply(this,arguments)}};_.compose=function(){var args=arguments;var start=args.length-1;return function(){var i=start;var result=args[start].apply(this,arguments);while(i--)result=args[i].call(this,result);return result}};_.after=function(times,func){return function(){if(--times<1){return func.apply(this,arguments)}}};_.before=function(times,func){var memo;return function(){if(--times>0){memo=func.apply(this,arguments)}if(times<=1)func=null;return memo}};_.once=_.partial(_.before,2);_.restArguments=restArguments;var hasEnumBug=!{toString:null}.propertyIsEnumerable("toString");var nonEnumerableProps=["valueOf","isPrototypeOf","toString","propertyIsEnumerable","hasOwnProperty","toLocaleString"];var collectNonEnumProps=function(obj,keys){var nonEnumIdx=nonEnumerableProps.length;var constructor=obj.constructor;var proto=_.isFunction(constructor)&&constructor.prototype||ObjProto;var prop="constructor";if(has(obj,prop)&&!_.contains(keys,prop))keys.push(prop);while(nonEnumIdx--){prop=nonEnumerableProps[nonEnumIdx];if(prop in obj&&obj[prop]!==proto[prop]&&!_.contains(keys,prop)){keys.push(prop)}}};_.keys=function(obj){if(!_.isObject(obj))return[];if(nativeKeys)return nativeKeys(obj);var keys=[];for(var key in obj)if(has(obj,key))keys.push(key);if(hasEnumBug)collectNonEnumProps(obj,keys);return keys};_.allKeys=function(obj){if(!_.isObject(obj))return[];var keys=[];for(var key in obj)keys.push(key);if(hasEnumBug)collectNonEnumProps(obj,keys);return keys};_.values=function(obj){var keys=_.keys(obj);var length=keys.length;var values=Array(length);for(var i=0;i<length;i++){values[i]=obj[keys[i]]}return values};_.mapObject=function(obj,iteratee,context){iteratee=cb(iteratee,context);var keys=_.keys(obj),length=keys.length,results={};for(var index=0;index<length;index++){var currentKey=keys[index];results[currentKey]=iteratee(obj[currentKey],currentKey,obj)}return results};_.pairs=function(obj){var keys=_.keys(obj);var length=keys.length;var pairs=Array(length);for(var i=0;i<length;i++){pairs[i]=[keys[i],obj[keys[i]]]}return pairs};_.invert=function(obj){var result={};var keys=_.keys(obj);for(var i=0,length=keys.length;i<length;i++){result[obj[keys[i]]]=keys[i]}return result};_.functions=_.methods=function(obj){var names=[];for(var key in obj){if(_.isFunction(obj[key]))names.push(key)}return names.sort()};var createAssigner=function(keysFunc,defaults){return function(obj){var length=arguments.length;if(defaults)obj=Object(obj);if(length<2||obj==null)return obj;for(var index=1;index<length;index++){var source=arguments[index],keys=keysFunc(source),l=keys.length;for(var i=0;i<l;i++){var key=keys[i];if(!defaults||obj[key]===void 0)obj[key]=source[key]}}return obj}};_.extend=createAssigner(_.allKeys);_.extendOwn=_.assign=createAssigner(_.keys);_.findKey=function(obj,predicate,context){predicate=cb(predicate,context);var keys=_.keys(obj),key;for(var i=0,length=keys.length;i<length;i++){key=keys[i];if(predicate(obj[key],key,obj))return key}};var keyInObj=function(value,key,obj){return key in obj};_.pick=restArguments((function(obj,keys){var result={},iteratee=keys[0];if(obj==null)return result;if(_.isFunction(iteratee)){if(keys.length>1)iteratee=optimizeCb(iteratee,keys[1]);keys=_.allKeys(obj)}else{iteratee=keyInObj;keys=flatten(keys,false,false);obj=Object(obj)}for(var i=0,length=keys.length;i<length;i++){var key=keys[i];var value=obj[key];if(iteratee(value,key,obj))result[key]=value}return result}));_.omit=restArguments((function(obj,keys){var iteratee=keys[0],context;if(_.isFunction(iteratee)){iteratee=_.negate(iteratee);if(keys.length>1)context=keys[1]}else{keys=_.map(flatten(keys,false,false),String);iteratee=function(value,key){return!_.contains(keys,key)}}return _.pick(obj,iteratee,context)}));_.defaults=createAssigner(_.allKeys,true);_.create=function(prototype,props){var result=baseCreate(prototype);if(props)_.extendOwn(result,props);return result};_.clone=function(obj){if(!_.isObject(obj))return obj;return _.isArray(obj)?obj.slice():_.extend({},obj)};_.tap=function(obj,interceptor){interceptor(obj);return obj};_.isMatch=function(object,attrs){var keys=_.keys(attrs),length=keys.length;if(object==null)return!length;var obj=Object(object);for(var i=0;i<length;i++){var key=keys[i];if(attrs[key]!==obj[key]||!(key in obj))return false}return true};var eq,deepEq;eq=function(a,b,aStack,bStack){if(a===b)return a!==0||1/a===1/b;if(a==null||b==null)return false;if(a!==a)return b!==b;var type=typeof a;if(type!=="function"&&type!=="object"&&typeof b!="object")return false;return deepEq(a,b,aStack,bStack)};deepEq=function(a,b,aStack,bStack){if(a instanceof _)a=a._wrapped;if(b instanceof _)b=b._wrapped;var className=toString.call(a);if(className!==toString.call(b))return false;switch(className){case"[object RegExp]":case"[object String]":return""+a===""+b;case"[object Number]":if(+a!==+a)return+b!==+b;return+a===0?1/+a===1/b:+a===+b;case"[object Date]":case"[object Boolean]":return+a===+b;case"[object Symbol]":return SymbolProto.valueOf.call(a)===SymbolProto.valueOf.call(b)}var areArrays=className==="[object Array]";if(!areArrays){if(typeof a!="object"||typeof b!="object")return false;var aCtor=a.constructor,bCtor=b.constructor;if(aCtor!==bCtor&&!(_.isFunction(aCtor)&&aCtor instanceof aCtor&&_.isFunction(bCtor)&&bCtor instanceof bCtor)&&("constructor"in a&&"constructor"in b)){return false}}aStack=aStack||[];bStack=bStack||[];var length=aStack.length;while(length--){if(aStack[length]===a)return bStack[length]===b}aStack.push(a);bStack.push(b);if(areArrays){length=a.length;if(length!==b.length)return false;while(length--){if(!eq(a[length],b[length],aStack,bStack))return false}}else{var keys=_.keys(a),key;length=keys.length;if(_.keys(b).length!==length)return false;while(length--){key=keys[length];if(!(has(b,key)&&eq(a[key],b[key],aStack,bStack)))return false}}aStack.pop();bStack.pop();return true};_.isEqual=function(a,b){return eq(a,b)};_.isEmpty=function(obj){if(obj==null)return true;if(isArrayLike(obj)&&(_.isArray(obj)||_.isString(obj)||_.isArguments(obj)))return obj.length===0;return _.keys(obj).length===0};_.isElement=function(obj){return!!(obj&&obj.nodeType===1)};_.isArray=nativeIsArray||function(obj){return toString.call(obj)==="[object Array]"};_.isObject=function(obj){var type=typeof obj;return type==="function"||type==="object"&&!!obj};_.each(["Arguments","Function","String","Number","Date","RegExp","Error","Symbol","Map","WeakMap","Set","WeakSet"],(function(name){_["is"+name]=function(obj){return toString.call(obj)==="[object "+name+"]"}}));if(!_.isArguments(arguments)){_.isArguments=function(obj){return has(obj,"callee")}}var nodelist=root.document&&root.document.childNodes;if(typeof/./!="function"&&typeof Int8Array!="object"&&typeof nodelist!="function"){_.isFunction=function(obj){return typeof obj=="function"||false}}_.isFinite=function(obj){return!_.isSymbol(obj)&&isFinite(obj)&&!isNaN(parseFloat(obj))};_.isNaN=function(obj){return _.isNumber(obj)&&isNaN(obj)};_.isBoolean=function(obj){return obj===true||obj===false||toString.call(obj)==="[object Boolean]"};_.isNull=function(obj){return obj===null};_.isUndefined=function(obj){return obj===void 0};_.has=function(obj,path){if(!_.isArray(path)){return has(obj,path)}var length=path.length;for(var i=0;i<length;i++){var key=path[i];if(obj==null||!hasOwnProperty.call(obj,key)){return false}obj=obj[key]}return!!length};_.noConflict=function(){root._=previousUnderscore;return this};_.identity=function(value){return value};_.constant=function(value){return function(){return value}};_.noop=function(){};_.property=function(path){if(!_.isArray(path)){return shallowProperty(path)}return function(obj){return deepGet(obj,path)}};_.propertyOf=function(obj){if(obj==null){return function(){}}return function(path){return!_.isArray(path)?obj[path]:deepGet(obj,path)}};_.matcher=_.matches=function(attrs){attrs=_.extendOwn({},attrs);return function(obj){return _.isMatch(obj,attrs)}};_.times=function(n,iteratee,context){var accum=Array(Math.max(0,n));iteratee=optimizeCb(iteratee,context,1);for(var i=0;i<n;i++)accum[i]=iteratee(i);return accum};_.random=function(min,max){if(max==null){max=min;min=0}return min+Math.floor(Math.random()*(max-min+1))};_.now=Date.now||function(){return(new Date).getTime()};var escapeMap={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#x27;","`":"&#x60;"};var unescapeMap=_.invert(escapeMap);var createEscaper=function(map){var escaper=function(match){return map[match]};var source="(?:"+_.keys(map).join("|")+")";var testRegexp=RegExp(source);var replaceRegexp=RegExp(source,"g");return function(string){string=string==null?"":""+string;return testRegexp.test(string)?string.replace(replaceRegexp,escaper):string}};_.escape=createEscaper(escapeMap);_.unescape=createEscaper(unescapeMap);_.result=function(obj,path,fallback){if(!_.isArray(path))path=[path];var length=path.length;if(!length){return _.isFunction(fallback)?fallback.call(obj):fallback}for(var i=0;i<length;i++){var prop=obj==null?void 0:obj[path[i]];if(prop===void 0){prop=fallback;i=length}obj=_.isFunction(prop)?prop.call(obj):prop}return obj};var idCounter=0;_.uniqueId=function(prefix){var id=++idCounter+"";return prefix?prefix+id:id};_.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g,escape:/<%-([\s\S]+?)%>/g};var noMatch=/(.)^/;var escapes={"'":"'","\\":"\\","\r":"r","\n":"n","\u2028":"u2028","\u2029":"u2029"};var escapeRegExp=/\\|'|\r|\n|\u2028|\u2029/g;var escapeChar=function(match){return"\\"+escapes[match]};_.template=function(text,settings,oldSettings){if(!settings&&oldSettings)settings=oldSettings;settings=_.defaults({},settings,_.templateSettings);var matcher=RegExp([(settings.escape||noMatch).source,(settings.interpolate||noMatch).source,(settings.evaluate||noMatch).source].join("|")+"|$","g");var index=0;var source="__p+='";text.replace(matcher,(function(match,escape,interpolate,evaluate,offset){source+=text.slice(index,offset).replace(escapeRegExp,escapeChar);index=offset+match.length;if(escape){source+="'+\n((__t=("+escape+"))==null?'':_.escape(__t))+\n'"}else if(interpolate){source+="'+\n((__t=("+interpolate+"))==null?'':__t)+\n'"}else if(evaluate){source+="';\n"+evaluate+"\n__p+='"}return match}));source+="';\n";if(!settings.variable)source="with(obj||{}){\n"+source+"}\n";source="var __t,__p='',__j=Array.prototype.join,"+"print=function(){__p+=__j.call(arguments,'');};\n"+source+"return __p;\n";var render;try{render=new Function(settings.variable||"obj","_",source)}catch(e){e.source=source;throw e}var template=function(data){return render.call(this,data,_)};var argument=settings.variable||"obj";template.source="function("+argument+"){\n"+source+"}";return template};_.chain=function(obj){var instance=_(obj);instance._chain=true;return instance};var chainResult=function(instance,obj){return instance._chain?_(obj).chain():obj};_.mixin=function(obj){_.each(_.functions(obj),(function(name){var func=_[name]=obj[name];_.prototype[name]=function(){var args=[this._wrapped];push.apply(args,arguments);return chainResult(this,func.apply(_,args))}}));return _};_.mixin(_);_.each(["pop","push","reverse","shift","sort","splice","unshift"],(function(name){var method=ArrayProto[name];_.prototype[name]=function(){var obj=this._wrapped;method.apply(obj,arguments);if((name==="shift"||name==="splice")&&obj.length===0)delete obj[0];return chainResult(this,obj)}}));_.each(["concat","join","slice"],(function(name){var method=ArrayProto[name];_.prototype[name]=function(){return chainResult(this,method.apply(this._wrapped,arguments))}}));_.prototype.value=function(){return this._wrapped};_.prototype.valueOf=_.prototype.toJSON=_.prototype.value;_.prototype.toString=function(){return String(this._wrapped)};if(typeof define=="function"&&define.amd){define("underscore",[],(function(){return _}))}})();(function(factory){var root=typeof self=="object"&&self.self===self&&self||typeof global=="object"&&global.global===global&&global;if(typeof define==="function"&&define.amd){define(["underscore","jquery","exports"],(function(_,$,exports){root.Backbone=factory(root,exports,_,$)}))}else if(typeof exports!=="undefined"){var _=require("underscore"),$;try{$=require("jquery")}catch(e){}factory(root,exports,_,$)}else{root.Backbone=factory(root,{},root._,root.jQuery||root.Zepto||root.ender||root.$)}})((function(root,Backbone,_,$){var previousBackbone=root.Backbone;var slice=Array.prototype.slice;Backbone.VERSION="1.4.0";Backbone.$=$;Backbone.noConflict=function(){root.Backbone=previousBackbone;return this};Backbone.emulateHTTP=false;Backbone.emulateJSON=false;var Events=Backbone.Events={};var eventSplitter=/\s+/;var _listening;var eventsApi=function(iteratee,events,name,callback,opts){var i=0,names;if(name&&typeof name==="object"){if(callback!==void 0&&"context"in opts&&opts.context===void 0)opts.context=callback;for(names=_.keys(name);i<names.length;i++){events=eventsApi(iteratee,events,names[i],name[names[i]],opts)}}else if(name&&eventSplitter.test(name)){for(names=name.split(eventSplitter);i<names.length;i++){events=iteratee(events,names[i],callback,opts)}}else{events=iteratee(events,name,callback,opts)}return events};Events.on=function(name,callback,context){this._events=eventsApi(onApi,this._events||{},name,callback,{context:context,ctx:this,listening:_listening});if(_listening){var listeners=this._listeners||(this._listeners={});listeners[_listening.id]=_listening;_listening.interop=false}return this};Events.listenTo=function(obj,name,callback){if(!obj)return this;var id=obj._listenId||(obj._listenId=_.uniqueId("l"));var listeningTo=this._listeningTo||(this._listeningTo={});var listening=_listening=listeningTo[id];if(!listening){this._listenId||(this._listenId=_.uniqueId("l"));listening=_listening=listeningTo[id]=new Listening(this,obj)}var error=tryCatchOn(obj,name,callback,this);_listening=void 0;if(error)throw error;if(listening.interop)listening.on(name,callback);return this};var onApi=function(events,name,callback,options){if(callback){var handlers=events[name]||(events[name]=[]);var context=options.context,ctx=options.ctx,listening=options.listening;if(listening)listening.count++;handlers.push({callback:callback,context:context,ctx:context||ctx,listening:listening})}return events};var tryCatchOn=function(obj,name,callback,context){try{obj.on(name,callback,context)}catch(e){return e}};Events.off=function(name,callback,context){if(!this._events)return this;this._events=eventsApi(offApi,this._events,name,callback,{context:context,listeners:this._listeners});return this};Events.stopListening=function(obj,name,callback){var listeningTo=this._listeningTo;if(!listeningTo)return this;var ids=obj?[obj._listenId]:_.keys(listeningTo);for(var i=0;i<ids.length;i++){var listening=listeningTo[ids[i]];if(!listening)break;listening.obj.off(name,callback,this);if(listening.interop)listening.off(name,callback)}if(_.isEmpty(listeningTo))this._listeningTo=void 0;return this};var offApi=function(events,name,callback,options){if(!events)return;var context=options.context,listeners=options.listeners;var i=0,names;if(!name&&!context&&!callback){for(names=_.keys(listeners);i<names.length;i++){listeners[names[i]].cleanup()}return}names=name?[name]:_.keys(events);for(;i<names.length;i++){name=names[i];var handlers=events[name];if(!handlers)break;var remaining=[];for(var j=0;j<handlers.length;j++){var handler=handlers[j];if(callback&&callback!==handler.callback&&callback!==handler.callback._callback||context&&context!==handler.context){remaining.push(handler)}else{var listening=handler.listening;if(listening)listening.off(name,callback)}}if(remaining.length){events[name]=remaining}else{delete events[name]}}return events};Events.once=function(name,callback,context){var events=eventsApi(onceMap,{},name,callback,this.off.bind(this));if(typeof name==="string"&&context==null)callback=void 0;return this.on(events,callback,context)};Events.listenToOnce=function(obj,name,callback){var events=eventsApi(onceMap,{},name,callback,this.stopListening.bind(this,obj));return this.listenTo(obj,events)};var onceMap=function(map,name,callback,offer){if(callback){var once=map[name]=_.once((function(){offer(name,once);callback.apply(this,arguments)}));once._callback=callback}return map};Events.trigger=function(name){if(!this._events)return this;var length=Math.max(0,arguments.length-1);var args=Array(length);for(var i=0;i<length;i++)args[i]=arguments[i+1];eventsApi(triggerApi,this._events,name,void 0,args);return this};var triggerApi=function(objEvents,name,callback,args){if(objEvents){var events=objEvents[name];var allEvents=objEvents.all;if(events&&allEvents)allEvents=allEvents.slice();if(events)triggerEvents(events,args);if(allEvents)triggerEvents(allEvents,[name].concat(args))}return objEvents};var triggerEvents=function(events,args){var ev,i=-1,l=events.length,a1=args[0],a2=args[1],a3=args[2];switch(args.length){case 0:while(++i<l)(ev=events[i]).callback.call(ev.ctx);return;case 1:while(++i<l)(ev=events[i]).callback.call(ev.ctx,a1);return;case 2:while(++i<l)(ev=events[i]).callback.call(ev.ctx,a1,a2);return;case 3:while(++i<l)(ev=events[i]).callback.call(ev.ctx,a1,a2,a3);return;default:while(++i<l)(ev=events[i]).callback.apply(ev.ctx,args);return}};var Listening=function(listener,obj){this.id=listener._listenId;this.listener=listener;this.obj=obj;this.interop=true;this.count=0;this._events=void 0};Listening.prototype.on=Events.on;Listening.prototype.off=function(name,callback){var cleanup;if(this.interop){this._events=eventsApi(offApi,this._events,name,callback,{context:void 0,listeners:void 0});cleanup=!this._events}else{this.count--;cleanup=this.count===0}if(cleanup)this.cleanup()};Listening.prototype.cleanup=function(){delete this.listener._listeningTo[this.obj._listenId];if(!this.interop)delete this.obj._listeners[this.id]};Events.bind=Events.on;Events.unbind=Events.off;_.extend(Backbone,Events);var Model=Backbone.Model=function(attributes,options){var attrs=attributes||{};options||(options={});this.preinitialize.apply(this,arguments);this.cid=_.uniqueId(this.cidPrefix);this.attributes={};if(options.collection)this.collection=options.collection;if(options.parse)attrs=this.parse(attrs,options)||{};var defaults=_.result(this,"defaults");attrs=_.defaults(_.extend({},defaults,attrs),defaults);this.set(attrs,options);this.changed={};this.initialize.apply(this,arguments)};_.extend(Model.prototype,Events,{changed:null,validationError:null,idAttribute:"id",cidPrefix:"c",preinitialize:function(){},initialize:function(){},toJSON:function(options){return _.clone(this.attributes)},sync:function(){return Backbone.sync.apply(this,arguments)},get:function(attr){return this.attributes[attr]},escape:function(attr){return _.escape(this.get(attr))},has:function(attr){return this.get(attr)!=null},matches:function(attrs){return!!_.iteratee(attrs,this)(this.attributes)},set:function(key,val,options){if(key==null)return this;var attrs;if(typeof key==="object"){attrs=key;options=val}else{(attrs={})[key]=val}options||(options={});if(!this._validate(attrs,options))return false;var unset=options.unset;var silent=options.silent;var changes=[];var changing=this._changing;this._changing=true;if(!changing){this._previousAttributes=_.clone(this.attributes);this.changed={}}var current=this.attributes;var changed=this.changed;var prev=this._previousAttributes;for(var attr in attrs){val=attrs[attr];if(!_.isEqual(current[attr],val))changes.push(attr);if(!_.isEqual(prev[attr],val)){changed[attr]=val}else{delete changed[attr]}unset?delete current[attr]:current[attr]=val}if(this.idAttribute in attrs)this.id=this.get(this.idAttribute);if(!silent){if(changes.length)this._pending=options;for(var i=0;i<changes.length;i++){this.trigger("change:"+changes[i],this,current[changes[i]],options)}}if(changing)return this;if(!silent){while(this._pending){options=this._pending;this._pending=false;this.trigger("change",this,options)}}this._pending=false;this._changing=false;return this},unset:function(attr,options){return this.set(attr,void 0,_.extend({},options,{unset:true}))},clear:function(options){var attrs={};for(var key in this.attributes)attrs[key]=void 0;return this.set(attrs,_.extend({},options,{unset:true}))},hasChanged:function(attr){if(attr==null)return!_.isEmpty(this.changed);return _.has(this.changed,attr)},changedAttributes:function(diff){if(!diff)return this.hasChanged()?_.clone(this.changed):false;var old=this._changing?this._previousAttributes:this.attributes;var changed={};var hasChanged;for(var attr in diff){var val=diff[attr];if(_.isEqual(old[attr],val))continue;changed[attr]=val;hasChanged=true}return hasChanged?changed:false},previous:function(attr){if(attr==null||!this._previousAttributes)return null;return this._previousAttributes[attr]},previousAttributes:function(){return _.clone(this._previousAttributes)},fetch:function(options){options=_.extend({parse:true},options);var model=this;var success=options.success;options.success=function(resp){var serverAttrs=options.parse?model.parse(resp,options):resp;if(!model.set(serverAttrs,options))return false;if(success)success.call(options.context,model,resp,options);model.trigger("sync",model,resp,options)};wrapError(this,options);return this.sync("read",this,options)},save:function(key,val,options){var attrs;if(key==null||typeof key==="object"){attrs=key;options=val}else{(attrs={})[key]=val}options=_.extend({validate:true,parse:true},options);var wait=options.wait;if(attrs&&!wait){if(!this.set(attrs,options))return false}else if(!this._validate(attrs,options)){return false}var model=this;var success=options.success;var attributes=this.attributes;options.success=function(resp){model.attributes=attributes;var serverAttrs=options.parse?model.parse(resp,options):resp;if(wait)serverAttrs=_.extend({},attrs,serverAttrs);if(serverAttrs&&!model.set(serverAttrs,options))return false;if(success)success.call(options.context,model,resp,options);model.trigger("sync",model,resp,options)};wrapError(this,options);if(attrs&&wait)this.attributes=_.extend({},attributes,attrs);var method=this.isNew()?"create":options.patch?"patch":"update";if(method==="patch"&&!options.attrs)options.attrs=attrs;var xhr=this.sync(method,this,options);this.attributes=attributes;return xhr},destroy:function(options){options=options?_.clone(options):{};var model=this;var success=options.success;var wait=options.wait;var destroy=function(){model.stopListening();model.trigger("destroy",model,model.collection,options)};options.success=function(resp){if(wait)destroy();if(success)success.call(options.context,model,resp,options);if(!model.isNew())model.trigger("sync",model,resp,options)};var xhr=false;if(this.isNew()){_.defer(options.success)}else{wrapError(this,options);xhr=this.sync("delete",this,options)}if(!wait)destroy();return xhr},url:function(){var base=_.result(this,"urlRoot")||_.result(this.collection,"url")||urlError();if(this.isNew())return base;var id=this.get(this.idAttribute);return base.replace(/[^\/]$/,"$&/")+encodeURIComponent(id)},parse:function(resp,options){return resp},clone:function(){return new this.constructor(this.attributes)},isNew:function(){return!this.has(this.idAttribute)},isValid:function(options){return this._validate({},_.extend({},options,{validate:true}))},_validate:function(attrs,options){if(!options.validate||!this.validate)return true;attrs=_.extend({},this.attributes,attrs);var error=this.validationError=this.validate(attrs,options)||null;if(!error)return true;this.trigger("invalid",this,error,_.extend(options,{validationError:error}));return false}});var Collection=Backbone.Collection=function(models,options){options||(options={});this.preinitialize.apply(this,arguments);if(options.model)this.model=options.model;if(options.comparator!==void 0)this.comparator=options.comparator;this._reset();this.initialize.apply(this,arguments);if(models)this.reset(models,_.extend({silent:true},options))};var setOptions={add:true,remove:true,merge:true};var addOptions={add:true,remove:false};var splice=function(array,insert,at){at=Math.min(Math.max(at,0),array.length);var tail=Array(array.length-at);var length=insert.length;var i;for(i=0;i<tail.length;i++)tail[i]=array[i+at];for(i=0;i<length;i++)array[i+at]=insert[i];for(i=0;i<tail.length;i++)array[i+length+at]=tail[i]};_.extend(Collection.prototype,Events,{model:Model,preinitialize:function(){},initialize:function(){},toJSON:function(options){return this.map((function(model){return model.toJSON(options)}))},sync:function(){return Backbone.sync.apply(this,arguments)},add:function(models,options){return this.set(models,_.extend({merge:false},options,addOptions))},remove:function(models,options){options=_.extend({},options);var singular=!_.isArray(models);models=singular?[models]:models.slice();var removed=this._removeModels(models,options);if(!options.silent&&removed.length){options.changes={added:[],merged:[],removed:removed};this.trigger("update",this,options)}return singular?removed[0]:removed},set:function(models,options){if(models==null)return;options=_.extend({},setOptions,options);if(options.parse&&!this._isModel(models)){models=this.parse(models,options)||[]}var singular=!_.isArray(models);models=singular?[models]:models.slice();var at=options.at;if(at!=null)at=+at;if(at>this.length)at=this.length;if(at<0)at+=this.length+1;var set=[];var toAdd=[];var toMerge=[];var toRemove=[];var modelMap={};var add=options.add;var merge=options.merge;var remove=options.remove;var sort=false;var sortable=this.comparator&&at==null&&options.sort!==false;var sortAttr=_.isString(this.comparator)?this.comparator:null;var model,i;for(i=0;i<models.length;i++){model=models[i];var existing=this.get(model);if(existing){if(merge&&model!==existing){var attrs=this._isModel(model)?model.attributes:model;if(options.parse)attrs=existing.parse(attrs,options);existing.set(attrs,options);toMerge.push(existing);if(sortable&&!sort)sort=existing.hasChanged(sortAttr)}if(!modelMap[existing.cid]){modelMap[existing.cid]=true;set.push(existing)}models[i]=existing}else if(add){model=models[i]=this._prepareModel(model,options);if(model){toAdd.push(model);this._addReference(model,options);modelMap[model.cid]=true;set.push(model)}}}if(remove){for(i=0;i<this.length;i++){model=this.models[i];if(!modelMap[model.cid])toRemove.push(model)}if(toRemove.length)this._removeModels(toRemove,options)}var orderChanged=false;var replace=!sortable&&add&&remove;if(set.length&&replace){orderChanged=this.length!==set.length||_.some(this.models,(function(m,index){return m!==set[index]}));this.models.length=0;splice(this.models,set,0);this.length=this.models.length}else if(toAdd.length){if(sortable)sort=true;splice(this.models,toAdd,at==null?this.length:at);this.length=this.models.length}if(sort)this.sort({silent:true});if(!options.silent){for(i=0;i<toAdd.length;i++){if(at!=null)options.index=at+i;model=toAdd[i];model.trigger("add",model,this,options)}if(sort||orderChanged)this.trigger("sort",this,options);if(toAdd.length||toRemove.length||toMerge.length){options.changes={added:toAdd,removed:toRemove,merged:toMerge};this.trigger("update",this,options)}}return singular?models[0]:models},reset:function(models,options){options=options?_.clone(options):{};for(var i=0;i<this.models.length;i++){this._removeReference(this.models[i],options)}options.previousModels=this.models;this._reset();models=this.add(models,_.extend({silent:true},options));if(!options.silent)this.trigger("reset",this,options);return models},push:function(model,options){return this.add(model,_.extend({at:this.length},options))},pop:function(options){var model=this.at(this.length-1);return this.remove(model,options)},unshift:function(model,options){return this.add(model,_.extend({at:0},options))},shift:function(options){var model=this.at(0);return this.remove(model,options)},slice:function(){return slice.apply(this.models,arguments)},get:function(obj){if(obj==null)return void 0;return this._byId[obj]||this._byId[this.modelId(this._isModel(obj)?obj.attributes:obj)]||obj.cid&&this._byId[obj.cid]},has:function(obj){return this.get(obj)!=null},at:function(index){if(index<0)index+=this.length;return this.models[index]},where:function(attrs,first){return this[first?"find":"filter"](attrs)},findWhere:function(attrs){return this.where(attrs,true)},sort:function(options){var comparator=this.comparator;if(!comparator)throw new Error("Cannot sort a set without a comparator");options||(options={});var length=comparator.length;if(_.isFunction(comparator))comparator=comparator.bind(this);if(length===1||_.isString(comparator)){this.models=this.sortBy(comparator)}else{this.models.sort(comparator)}if(!options.silent)this.trigger("sort",this,options);return this},pluck:function(attr){return this.map(attr+"")},fetch:function(options){options=_.extend({parse:true},options);var success=options.success;var collection=this;options.success=function(resp){var method=options.reset?"reset":"set";collection[method](resp,options);if(success)success.call(options.context,collection,resp,options);collection.trigger("sync",collection,resp,options)};wrapError(this,options);return this.sync("read",this,options)},create:function(model,options){options=options?_.clone(options):{};var wait=options.wait;model=this._prepareModel(model,options);if(!model)return false;if(!wait)this.add(model,options);var collection=this;var success=options.success;options.success=function(m,resp,callbackOpts){if(wait)collection.add(m,callbackOpts);if(success)success.call(callbackOpts.context,m,resp,callbackOpts)};model.save(null,options);return model},parse:function(resp,options){return resp},clone:function(){return new this.constructor(this.models,{model:this.model,comparator:this.comparator})},modelId:function(attrs){return attrs[this.model.prototype.idAttribute||"id"]},values:function(){return new CollectionIterator(this,ITERATOR_VALUES)},keys:function(){return new CollectionIterator(this,ITERATOR_KEYS)},entries:function(){return new CollectionIterator(this,ITERATOR_KEYSVALUES)},_reset:function(){this.length=0;this.models=[];this._byId={}},_prepareModel:function(attrs,options){if(this._isModel(attrs)){if(!attrs.collection)attrs.collection=this;return attrs}options=options?_.clone(options):{};options.collection=this;var model=new this.model(attrs,options);if(!model.validationError)return model;this.trigger("invalid",this,model.validationError,options);return false},_removeModels:function(models,options){var removed=[];for(var i=0;i<models.length;i++){var model=this.get(models[i]);if(!model)continue;var index=this.indexOf(model);this.models.splice(index,1);this.length--;delete this._byId[model.cid];var id=this.modelId(model.attributes);if(id!=null)delete this._byId[id];if(!options.silent){options.index=index;model.trigger("remove",model,this,options)}removed.push(model);this._removeReference(model,options)}return removed},_isModel:function(model){return model instanceof Model},_addReference:function(model,options){this._byId[model.cid]=model;var id=this.modelId(model.attributes);if(id!=null)this._byId[id]=model;model.on("all",this._onModelEvent,this)},_removeReference:function(model,options){delete this._byId[model.cid];var id=this.modelId(model.attributes);if(id!=null)delete this._byId[id];if(this===model.collection)delete model.collection;model.off("all",this._onModelEvent,this)},_onModelEvent:function(event,model,collection,options){if(model){if((event==="add"||event==="remove")&&collection!==this)return;if(event==="destroy")this.remove(model,options);if(event==="change"){var prevId=this.modelId(model.previousAttributes());var id=this.modelId(model.attributes);if(prevId!==id){if(prevId!=null)delete this._byId[prevId];if(id!=null)this._byId[id]=model}}}this.trigger.apply(this,arguments)}});var $$iterator=typeof Symbol==="function"&&Symbol.iterator;if($$iterator){Collection.prototype[$$iterator]=Collection.prototype.values}var CollectionIterator=function(collection,kind){this._collection=collection;this._kind=kind;this._index=0};var ITERATOR_VALUES=1;var ITERATOR_KEYS=2;var ITERATOR_KEYSVALUES=3;if($$iterator){CollectionIterator.prototype[$$iterator]=function(){return this}}CollectionIterator.prototype.next=function(){if(this._collection){if(this._index<this._collection.length){var model=this._collection.at(this._index);this._index++;var value;if(this._kind===ITERATOR_VALUES){value=model}else{var id=this._collection.modelId(model.attributes);if(this._kind===ITERATOR_KEYS){value=id}else{value=[id,model]}}return{value:value,done:false}}this._collection=void 0}return{value:void 0,done:true}};var View=Backbone.View=function(options){this.cid=_.uniqueId("view");this.preinitialize.apply(this,arguments);_.extend(this,_.pick(options,viewOptions));this._ensureElement();this.initialize.apply(this,arguments)};var delegateEventSplitter=/^(\S+)\s*(.*)$/;var viewOptions=["model","collection","el","id","attributes","className","tagName","events"];_.extend(View.prototype,Events,{tagName:"div",$:function(selector){return this.$el.find(selector)},preinitialize:function(){},initialize:function(){},render:function(){return this},remove:function(){this._removeElement();this.stopListening();return this},_removeElement:function(){this.$el.remove()},setElement:function(element){this.undelegateEvents();this._setElement(element);this.delegateEvents();return this},_setElement:function(el){this.$el=el instanceof Backbone.$?el:Backbone.$(el);this.el=this.$el[0]},delegateEvents:function(events){events||(events=_.result(this,"events"));if(!events)return this;this.undelegateEvents();for(var key in events){var method=events[key];if(!_.isFunction(method))method=this[method];if(!method)continue;var match=key.match(delegateEventSplitter);this.delegate(match[1],match[2],method.bind(this))}return this},delegate:function(eventName,selector,listener){this.$el.on(eventName+".delegateEvents"+this.cid,selector,listener);return this},undelegateEvents:function(){if(this.$el)this.$el.off(".delegateEvents"+this.cid);return this},undelegate:function(eventName,selector,listener){this.$el.off(eventName+".delegateEvents"+this.cid,selector,listener);return this},_createElement:function(tagName){return document.createElement(tagName)},_ensureElement:function(){if(!this.el){var attrs=_.extend({},_.result(this,"attributes"));if(this.id)attrs.id=_.result(this,"id");if(this.className)attrs["class"]=_.result(this,"className");this.setElement(this._createElement(_.result(this,"tagName")));this._setAttributes(attrs)}else{this.setElement(_.result(this,"el"))}},_setAttributes:function(attributes){this.$el.attr(attributes)}});var addMethod=function(base,length,method,attribute){switch(length){case 1:return function(){return base[method](this[attribute])};case 2:return function(value){return base[method](this[attribute],value)};case 3:return function(iteratee,context){return base[method](this[attribute],cb(iteratee,this),context)};case 4:return function(iteratee,defaultVal,context){return base[method](this[attribute],cb(iteratee,this),defaultVal,context)};default:return function(){var args=slice.call(arguments);args.unshift(this[attribute]);return base[method].apply(base,args)}}};var addUnderscoreMethods=function(Class,base,methods,attribute){_.each(methods,(function(length,method){if(base[method])Class.prototype[method]=addMethod(base,length,method,attribute)}))};var cb=function(iteratee,instance){if(_.isFunction(iteratee))return iteratee;if(_.isObject(iteratee)&&!instance._isModel(iteratee))return modelMatcher(iteratee);if(_.isString(iteratee))return function(model){return model.get(iteratee)};return iteratee};var modelMatcher=function(attrs){var matcher=_.matches(attrs);return function(model){return matcher(model.attributes)}};var collectionMethods={forEach:3,each:3,map:3,collect:3,reduce:0,foldl:0,inject:0,reduceRight:0,foldr:0,find:3,detect:3,filter:3,select:3,reject:3,every:3,all:3,some:3,any:3,include:3,includes:3,contains:3,invoke:0,max:3,min:3,toArray:1,size:1,first:3,head:3,take:3,initial:3,rest:3,tail:3,drop:3,last:3,without:0,difference:0,indexOf:3,shuffle:1,lastIndexOf:3,isEmpty:1,chain:1,sample:3,partition:3,groupBy:3,countBy:3,sortBy:3,indexBy:3,findIndex:3,findLastIndex:3};var modelMethods={keys:1,values:1,pairs:1,invert:1,pick:0,omit:0,chain:1,isEmpty:1};_.each([[Collection,collectionMethods,"models"],[Model,modelMethods,"attributes"]],(function(config){var Base=config[0],methods=config[1],attribute=config[2];Base.mixin=function(obj){var mappings=_.reduce(_.functions(obj),(function(memo,name){memo[name]=0;return memo}),{});addUnderscoreMethods(Base,obj,mappings,attribute)};addUnderscoreMethods(Base,_,methods,attribute)}));Backbone.sync=function(method,model,options){var type=methodMap[method];_.defaults(options||(options={}),{emulateHTTP:Backbone.emulateHTTP,emulateJSON:Backbone.emulateJSON});var params={type:type,dataType:"json"};if(!options.url){params.url=_.result(model,"url")||urlError()}if(options.data==null&&model&&(method==="create"||method==="update"||method==="patch")){params.contentType="application/json";params.data=JSON.stringify(options.attrs||model.toJSON(options))}if(options.emulateJSON){params.contentType="application/x-www-form-urlencoded";params.data=params.data?{model:params.data}:{}}if(options.emulateHTTP&&(type==="PUT"||type==="DELETE"||type==="PATCH")){params.type="POST";if(options.emulateJSON)params.data._method=type;var beforeSend=options.beforeSend;options.beforeSend=function(xhr){xhr.setRequestHeader("X-HTTP-Method-Override",type);if(beforeSend)return beforeSend.apply(this,arguments)}}if(params.type!=="GET"&&!options.emulateJSON){params.processData=false}var error=options.error;options.error=function(xhr,textStatus,errorThrown){options.textStatus=textStatus;options.errorThrown=errorThrown;if(error)error.call(options.context,xhr,textStatus,errorThrown)};var xhr=options.xhr=Backbone.ajax(_.extend(params,options));model.trigger("request",model,xhr,options);return xhr};var methodMap={create:"POST",update:"PUT",patch:"PATCH",delete:"DELETE",read:"GET"};Backbone.ajax=function(){return Backbone.$.ajax.apply(Backbone.$,arguments)};var Router=Backbone.Router=function(options){options||(options={});this.preinitialize.apply(this,arguments);if(options.routes)this.routes=options.routes;this._bindRoutes();this.initialize.apply(this,arguments)};var optionalParam=/\((.*?)\)/g;var namedParam=/(\(\?)?:\w+/g;var splatParam=/\*\w+/g;var escapeRegExp=/[\-{}\[\]+?.,\\\^$|#\s]/g;_.extend(Router.prototype,Events,{preinitialize:function(){},initialize:function(){},route:function(route,name,callback){if(!_.isRegExp(route))route=this._routeToRegExp(route);if(_.isFunction(name)){callback=name;name=""}if(!callback)callback=this[name];var router=this;Backbone.history.route(route,(function(fragment){var args=router._extractParameters(route,fragment);if(router.execute(callback,args,name)!==false){router.trigger.apply(router,["route:"+name].concat(args));router.trigger("route",name,args);Backbone.history.trigger("route",router,name,args)}}));return this},execute:function(callback,args,name){if(callback)callback.apply(this,args)},navigate:function(fragment,options){Backbone.history.navigate(fragment,options);return this},_bindRoutes:function(){if(!this.routes)return;this.routes=_.result(this,"routes");var route,routes=_.keys(this.routes);while((route=routes.pop())!=null){this.route(route,this.routes[route])}},_routeToRegExp:function(route){route=route.replace(escapeRegExp,"\\$&").replace(optionalParam,"(?:$1)?").replace(namedParam,(function(match,optional){return optional?match:"([^/?]+)"})).replace(splatParam,"([^?]*?)");return new RegExp("^"+route+"(?:\\?([\\s\\S]*))?$")},_extractParameters:function(route,fragment){var params=route.exec(fragment).slice(1);return _.map(params,(function(param,i){if(i===params.length-1)return param||null;return param?decodeURIComponent(param):null}))}});var History=Backbone.History=function(){this.handlers=[];this.checkUrl=this.checkUrl.bind(this);if(typeof window!=="undefined"){this.location=window.location;this.history=window.history}};var routeStripper=/^[#\/]|\s+$/g;var rootStripper=/^\/+|\/+$/g;var pathStripper=/#.*$/;History.started=false;_.extend(History.prototype,Events,{interval:50,atRoot:function(){var path=this.location.pathname.replace(/[^\/]$/,"$&/");return path===this.root&&!this.getSearch()},matchRoot:function(){var path=this.decodeFragment(this.location.pathname);var rootPath=path.slice(0,this.root.length-1)+"/";return rootPath===this.root},decodeFragment:function(fragment){return decodeURI(fragment.replace(/%25/g,"%2525"))},getSearch:function(){var match=this.location.href.replace(/#.*/,"").match(/\?.+/);return match?match[0]:""},getHash:function(window){var match=(window||this).location.href.match(/#(.*)$/);return match?match[1]:""},getPath:function(){var path=this.decodeFragment(this.location.pathname+this.getSearch()).slice(this.root.length-1);return path.charAt(0)==="/"?path.slice(1):path},getFragment:function(fragment){if(fragment==null){if(this._usePushState||!this._wantsHashChange){fragment=this.getPath()}else{fragment=this.getHash()}}return fragment.replace(routeStripper,"")},start:function(options){if(History.started)throw new Error("Backbone.history has already been started");History.started=true;this.options=_.extend({root:"/"},this.options,options);this.root=this.options.root;this._wantsHashChange=this.options.hashChange!==false;this._hasHashChange="onhashchange"in window&&(document.documentMode===void 0||document.documentMode>7);this._useHashChange=this._wantsHashChange&&this._hasHashChange;this._wantsPushState=!!this.options.pushState;this._hasPushState=!!(this.history&&this.history.pushState);this._usePushState=this._wantsPushState&&this._hasPushState;this.fragment=this.getFragment();this.root=("/"+this.root+"/").replace(rootStripper,"/");if(this._wantsHashChange&&this._wantsPushState){if(!this._hasPushState&&!this.atRoot()){var rootPath=this.root.slice(0,-1)||"/";this.location.replace(rootPath+"#"+this.getPath());return true}else if(this._hasPushState&&this.atRoot()){this.navigate(this.getHash(),{replace:true})}}if(!this._hasHashChange&&this._wantsHashChange&&!this._usePushState){this.iframe=document.createElement("iframe");this.iframe.src="javascript:0";this.iframe.style.display="none";this.iframe.tabIndex=-1;var body=document.body;var iWindow=body.insertBefore(this.iframe,body.firstChild).contentWindow;iWindow.document.open();iWindow.document.close();iWindow.location.hash="#"+this.fragment}var addEventListener=window.addEventListener||function(eventName,listener){return attachEvent("on"+eventName,listener)};if(this._usePushState){addEventListener("popstate",this.checkUrl,false)}else if(this._useHashChange&&!this.iframe){addEventListener("hashchange",this.checkUrl,false)}else if(this._wantsHashChange){this._checkUrlInterval=setInterval(this.checkUrl,this.interval)}if(!this.options.silent)return this.loadUrl()},stop:function(){var removeEventListener=window.removeEventListener||function(eventName,listener){return detachEvent("on"+eventName,listener)};if(this._usePushState){removeEventListener("popstate",this.checkUrl,false)}else if(this._useHashChange&&!this.iframe){removeEventListener("hashchange",this.checkUrl,false)}if(this.iframe){document.body.removeChild(this.iframe);this.iframe=null}if(this._checkUrlInterval)clearInterval(this._checkUrlInterval);History.started=false},route:function(route,callback){this.handlers.unshift({route:route,callback:callback})},checkUrl:function(e){var current=this.getFragment();if(current===this.fragment&&this.iframe){current=this.getHash(this.iframe.contentWindow)}if(current===this.fragment)return false;if(this.iframe)this.navigate(current);this.loadUrl()},loadUrl:function(fragment){if(!this.matchRoot())return false;fragment=this.fragment=this.getFragment(fragment);return _.some(this.handlers,(function(handler){if(handler.route.test(fragment)){handler.callback(fragment);return true}}))},navigate:function(fragment,options){if(!History.started)return false;if(!options||options===true)options={trigger:!!options};fragment=this.getFragment(fragment||"");var rootPath=this.root;if(fragment===""||fragment.charAt(0)==="?"){rootPath=rootPath.slice(0,-1)||"/"}var url=rootPath+fragment;fragment=fragment.replace(pathStripper,"");var decodedFragment=this.decodeFragment(fragment);if(this.fragment===decodedFragment)return;this.fragment=decodedFragment;if(this._usePushState){this.history[options.replace?"replaceState":"pushState"]({},document.title,url)}else if(this._wantsHashChange){this._updateHash(this.location,fragment,options.replace);if(this.iframe&&fragment!==this.getHash(this.iframe.contentWindow)){var iWindow=this.iframe.contentWindow;if(!options.replace){iWindow.document.open();iWindow.document.close()}this._updateHash(iWindow.location,fragment,options.replace)}}else{return this.location.assign(url)}if(options.trigger)return this.loadUrl(fragment)},_updateHash:function(location,fragment,replace){if(replace){var href=location.href.replace(/(javascript:|#).*$/,"");location.replace(href+"#"+fragment)}else{location.hash="#"+fragment}}});Backbone.history=new History;var extend=function(protoProps,staticProps){var parent=this;var child;if(protoProps&&_.has(protoProps,"constructor")){child=protoProps.constructor}else{child=function(){return parent.apply(this,arguments)}}_.extend(child,parent,staticProps);child.prototype=_.create(parent.prototype,protoProps);child.prototype.constructor=child;child.__super__=parent.prototype;return child};Model.extend=Collection.extend=Router.extend=View.extend=History.extend=extend;var urlError=function(){throw new Error('A "url" property or function must be specified')};var wrapError=function(model,options){var error=options.error;options.error=function(resp){if(error)error.call(options.context,model,resp,options);model.trigger("error",model,resp,options)}};return Backbone}));var Account=Backbone.Model.extend({defaults:{id:0,name:"",email:"",is_cof:"",promo:"",balance:"",is_frozen:false,departement:"",nickname:""},url:function(){return django_urls["kfet.account.read.json"](encodeURIComponent(this.get("trigramme")))},reset:function(){this.set(this.defaults)},parse:function(resp,options){if(_.has(resp,"balance")){return _.extend(resp,{balance:parseFloat(resp.balance)})}else{return resp}},view:function(){var view_class;if(!this.is_empty_account()){view_class=EmptyAccountView}else if(this.get("trigramme")=="LIQ"){view_class=LIQView}else{view_class=AccountView}return new view_class({model:this})},render:function(){this.view().render()},is_empty_account:function(){return this.id!=0}});var AccountView=Backbone.View.extend({el:"#account",buttons:".buttons",id_field:"#id_on_acc",props:_.keys(Account.prototype.defaults),get:function(property){var getter_name=`get_${property}`;if(_.functions(this).includes(getter_name))return this[getter_name]();else return this.model.get(property)},get_is_cof:function(){return this.model.get("is_cof")?"COF":"Non-COF"},get_balance:function(){return amountToUKF(this.model.get("balance"),this.model.get("is_cof"),true)},attr_data_balance:function(){if(this.model.get("balance")<0){return"neg"}else if(this.model.get("balance")<=5){return"low"}else{return"ok"}},get_buttons:function(){var url=django_urls["kfet.account.read"](this.model.get("trigramme"));return`<a href="${url}" class="btn btn-primary" target="_blank" title="Modifier"><span class="glyphicon glyphicon-cog"></span></a>`},render:function(){for(let prop of this.props){var selector="#account-"+prop;this.$(selector).text(this.get(prop))}this.$el.attr("data-balance",this.attr_data_balance());this.$(this.buttons).html(this.get_buttons());$(this.id_field).val(this.get("id"))}});var LIQView=AccountView.extend({get_balance:function(){return""},attr_data_balance:function(){return"ok"}});var EmptyAccountView=AccountView.extend({get:function(){return""},attr_data_balance:function(){return""},get_buttons:function(){var buttons='<button class="btn btn-primary search" title="Rechercher"><span class="glyphicon glyphicon-search"></span></button>';var trigramme=this.model.get("trigramme");if(trigramme.is_valid_trigramme()){trigramme=encodeURIComponent(trigramme);var url_base=django_urls["kfet.account.create"]();var url=`${url_base}?trigramme=${trigramme}`;buttons+=`<a href="${url}" class="btn btn-primary" target="_blank" title="Créer"><span class="glyphicon glyphicon-plus"></span></a>`}return buttons}});class AccountManager{constructor(){this._$input=$("#id_trigramme");this._$container=$("#account");this._$article_select=$("#article_autocomplete");this.account=new Account({trigramme:""});this.search=new AccountSearch(this);this._init_events()}get data(){return this.account.toJSON()}_init_events(){var that=this;this._$input.on("input",()=>this.update());this._$input.on("keydown",(function(e){if(e.key=="ArrowDown"){that.set("LIQ")}}));this._$container.on("click",".search",(function(){that.search.open()}));this._$container.on("keydown",(function(e){if(e.key=="f"&&e.ctrlKey){that.search.open();e.preventDefault()}}))}set(trigramme){this._$input.val(trigramme);this.update()}update(){var trigramme=this._$input.val().format_trigramme();this.account.set({trigramme:trigramme});if(trigramme.is_valid_trigramme()){this.account.fetch({success:this._on_success.bind(this),error:this.reset.bind(this,false)})}else{this.reset()}}_on_success(){this.account.render();this._$article_select.focus();window.updateBasketAmount();window.updateBasketRel()}reset(hard_reset=false){this.account.reset();this.account.render();if(hard_reset){this._$input.val("");this.update()}}}class AccountSearch{constructor(manager){this.manager=manager;this._content='<input type="text" name="q" id="search_autocomplete" autocomplete="off" spellcheck="false" autofocus><div id="account_results"></div>';this._input="#search_autocomplete";this._results_container="#account_results"}open(){var that=this;this._$dialog=$.dialog({title:"Recherche de compte",content:this._content,backgroundDismiss:true,animation:"top",closeAnimation:"bottom",keyboardEnabled:true,onOpen:function(){that._$input=$(that._input);that._$results_container=$(that._results_container);that._init_form()._init_events()}})}_init_form(){var that=this;this._$input.yourlabsAutocomplete({url:django_urls["kfet.account.search.autocomplete"](),minimumCharacters:2,id:"search_autocomplete",choiceSelector:".autocomplete-value",placeholder:"Chercher un utilisateur K-Fêt",container:that._$results_container,box:that._$results_container,fixPosition:function(){}});return this}_init_events(){this._$input.bind("selectChoice",(e,choice,autocomplete)=>this._on_select(e,choice,autocomplete));return this}_on_select(e,choice,autocomplete){var choice_text=choice.text().trim();var trigramme_regex=/\((.{3})\)$/;var trigramme=choice_text.match(trigramme_regex)[1];this.manager.set(trigramme);this.close()}close(){if(this._$dialog!==undefined){this._$dialog.close()}}}$((function(){self.account_manager=new AccountManager}));
\ No newline at end of file
diff --git a/kfet/static/kfet/src/kpsul/Makefile b/kfet/static/kfet/src/kpsul/Makefile
new file mode 100644
index 00000000..d460950f
--- /dev/null
+++ b/kfet/static/kfet/src/kpsul/Makefile
@@ -0,0 +1,25 @@
+# Compilation des fichiers .js de K-Psul en une version minifiée
+
+LIBS = libs/underscore.js libs/backbone.js
+MODELS = $(wildcard models/**.js)
+MANAGERS = $(wildcard managers/**.js)
+ENTRYPOINT = kpsul.js
+
+CONCAT_FILE = kpsul.src.js
+TARGET = ../../js/kpsul.min.js
+
+FLAGS = 
+
+
+build: concat minify
+# For dev use : we don't minify
+dev: concat cp
+
+concat:
+	@cat $(LIBS) $(MODELS) $(MANAGERS) $(ENTRYPOINT) > $(CONCAT_FILE)
+
+cp:
+	@cp $(CONCAT_FILE) $(TARGET)
+
+minify:
+	terser $(CONCAT_FILE) -o $(TARGET) $(FLAGS)
\ No newline at end of file
diff --git a/kfet/static/kfet/src/kpsul/kpsul.js b/kfet/static/kfet/src/kpsul/kpsul.js
new file mode 100644
index 00000000..e88f4282
--- /dev/null
+++ b/kfet/static/kfet/src/kpsul/kpsul.js
@@ -0,0 +1,3 @@
+$(function () {
+    self.account_manager = new AccountManager();
+})
\ No newline at end of file
diff --git a/kfet/static/kfet/src/kpsul/kpsul.src.js b/kfet/static/kfet/src/kpsul/kpsul.src.js
new file mode 100644
index 00000000..c5bc4bf6
--- /dev/null
+++ b/kfet/static/kfet/src/kpsul/kpsul.src.js
@@ -0,0 +1,4087 @@
+//     Underscore.js 1.9.1
+//     http://underscorejs.org
+//     (c) 2009-2018 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+//     Underscore may be freely distributed under the MIT license.
+
+(function() {
+
+  // Baseline setup
+  // --------------
+
+  // Establish the root object, `window` (`self`) in the browser, `global`
+  // on the server, or `this` in some virtual machines. We use `self`
+  // instead of `window` for `WebWorker` support.
+  var root = typeof self == 'object' && self.self === self && self ||
+            typeof global == 'object' && global.global === global && global ||
+            this ||
+            {};
+
+  // Save the previous value of the `_` variable.
+  var previousUnderscore = root._;
+
+  // Save bytes in the minified (but not gzipped) version:
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype;
+  var SymbolProto = typeof Symbol !== 'undefined' ? Symbol.prototype : null;
+
+  // Create quick reference variables for speed access to core prototypes.
+  var push = ArrayProto.push,
+      slice = ArrayProto.slice,
+      toString = ObjProto.toString,
+      hasOwnProperty = ObjProto.hasOwnProperty;
+
+  // All **ECMAScript 5** native function implementations that we hope to use
+  // are declared here.
+  var nativeIsArray = Array.isArray,
+      nativeKeys = Object.keys,
+      nativeCreate = Object.create;
+
+  // Naked function reference for surrogate-prototype-swapping.
+  var Ctor = function(){};
+
+  // Create a safe reference to the Underscore object for use below.
+  var _ = function(obj) {
+    if (obj instanceof _) return obj;
+    if (!(this instanceof _)) return new _(obj);
+    this._wrapped = obj;
+  };
+
+  // Export the Underscore object for **Node.js**, with
+  // backwards-compatibility for their old module API. If we're in
+  // the browser, add `_` as a global object.
+  // (`nodeType` is checked to ensure that `module`
+  // and `exports` are not HTML elements.)
+  if (typeof exports != 'undefined' && !exports.nodeType) {
+    if (typeof module != 'undefined' && !module.nodeType && module.exports) {
+      exports = module.exports = _;
+    }
+    exports._ = _;
+  } else {
+    root._ = _;
+  }
+
+  // Current version.
+  _.VERSION = '1.9.1';
+
+  // Internal function that returns an efficient (for current engines) version
+  // of the passed-in callback, to be repeatedly applied in other Underscore
+  // functions.
+  var optimizeCb = function(func, context, argCount) {
+    if (context === void 0) return func;
+    switch (argCount == null ? 3 : argCount) {
+      case 1: return function(value) {
+        return func.call(context, value);
+      };
+      // The 2-argument case is omitted because we’re not using it.
+      case 3: return function(value, index, collection) {
+        return func.call(context, value, index, collection);
+      };
+      case 4: return function(accumulator, value, index, collection) {
+        return func.call(context, accumulator, value, index, collection);
+      };
+    }
+    return function() {
+      return func.apply(context, arguments);
+    };
+  };
+
+  var builtinIteratee;
+
+  // An internal function to generate callbacks that can be applied to each
+  // element in a collection, returning the desired result — either `identity`,
+  // an arbitrary callback, a property matcher, or a property accessor.
+  var cb = function(value, context, argCount) {
+    if (_.iteratee !== builtinIteratee) return _.iteratee(value, context);
+    if (value == null) return _.identity;
+    if (_.isFunction(value)) return optimizeCb(value, context, argCount);
+    if (_.isObject(value) && !_.isArray(value)) return _.matcher(value);
+    return _.property(value);
+  };
+
+  // External wrapper for our callback generator. Users may customize
+  // `_.iteratee` if they want additional predicate/iteratee shorthand styles.
+  // This abstraction hides the internal-only argCount argument.
+  _.iteratee = builtinIteratee = function(value, context) {
+    return cb(value, context, Infinity);
+  };
+
+  // Some functions take a variable number of arguments, or a few expected
+  // arguments at the beginning and then a variable number of values to operate
+  // on. This helper accumulates all remaining arguments past the function’s
+  // argument length (or an explicit `startIndex`), into an array that becomes
+  // the last argument. Similar to ES6’s "rest parameter".
+  var restArguments = function(func, startIndex) {
+    startIndex = startIndex == null ? func.length - 1 : +startIndex;
+    return function() {
+      var length = Math.max(arguments.length - startIndex, 0),
+          rest = Array(length),
+          index = 0;
+      for (; index < length; index++) {
+        rest[index] = arguments[index + startIndex];
+      }
+      switch (startIndex) {
+        case 0: return func.call(this, rest);
+        case 1: return func.call(this, arguments[0], rest);
+        case 2: return func.call(this, arguments[0], arguments[1], rest);
+      }
+      var args = Array(startIndex + 1);
+      for (index = 0; index < startIndex; index++) {
+        args[index] = arguments[index];
+      }
+      args[startIndex] = rest;
+      return func.apply(this, args);
+    };
+  };
+
+  // An internal function for creating a new object that inherits from another.
+  var baseCreate = function(prototype) {
+    if (!_.isObject(prototype)) return {};
+    if (nativeCreate) return nativeCreate(prototype);
+    Ctor.prototype = prototype;
+    var result = new Ctor;
+    Ctor.prototype = null;
+    return result;
+  };
+
+  var shallowProperty = function(key) {
+    return function(obj) {
+      return obj == null ? void 0 : obj[key];
+    };
+  };
+
+  var has = function(obj, path) {
+    return obj != null && hasOwnProperty.call(obj, path);
+  }
+
+  var deepGet = function(obj, path) {
+    var length = path.length;
+    for (var i = 0; i < length; i++) {
+      if (obj == null) return void 0;
+      obj = obj[path[i]];
+    }
+    return length ? obj : void 0;
+  };
+
+  // Helper for collection methods to determine whether a collection
+  // should be iterated as an array or as an object.
+  // Related: http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
+  // Avoids a very nasty iOS 8 JIT bug on ARM-64. #2094
+  var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;
+  var getLength = shallowProperty('length');
+  var isArrayLike = function(collection) {
+    var length = getLength(collection);
+    return typeof length == 'number' && length >= 0 && length <= MAX_ARRAY_INDEX;
+  };
+
+  // Collection Functions
+  // --------------------
+
+  // The cornerstone, an `each` implementation, aka `forEach`.
+  // Handles raw objects in addition to array-likes. Treats all
+  // sparse array-likes as if they were dense.
+  _.each = _.forEach = function(obj, iteratee, context) {
+    iteratee = optimizeCb(iteratee, context);
+    var i, length;
+    if (isArrayLike(obj)) {
+      for (i = 0, length = obj.length; i < length; i++) {
+        iteratee(obj[i], i, obj);
+      }
+    } else {
+      var keys = _.keys(obj);
+      for (i = 0, length = keys.length; i < length; i++) {
+        iteratee(obj[keys[i]], keys[i], obj);
+      }
+    }
+    return obj;
+  };
+
+  // Return the results of applying the iteratee to each element.
+  _.map = _.collect = function(obj, iteratee, context) {
+    iteratee = cb(iteratee, context);
+    var keys = !isArrayLike(obj) && _.keys(obj),
+        length = (keys || obj).length,
+        results = Array(length);
+    for (var index = 0; index < length; index++) {
+      var currentKey = keys ? keys[index] : index;
+      results[index] = iteratee(obj[currentKey], currentKey, obj);
+    }
+    return results;
+  };
+
+  // Create a reducing function iterating left or right.
+  var createReduce = function(dir) {
+    // Wrap code that reassigns argument variables in a separate function than
+    // the one that accesses `arguments.length` to avoid a perf hit. (#1991)
+    var reducer = function(obj, iteratee, memo, initial) {
+      var keys = !isArrayLike(obj) && _.keys(obj),
+          length = (keys || obj).length,
+          index = dir > 0 ? 0 : length - 1;
+      if (!initial) {
+        memo = obj[keys ? keys[index] : index];
+        index += dir;
+      }
+      for (; index >= 0 && index < length; index += dir) {
+        var currentKey = keys ? keys[index] : index;
+        memo = iteratee(memo, obj[currentKey], currentKey, obj);
+      }
+      return memo;
+    };
+
+    return function(obj, iteratee, memo, context) {
+      var initial = arguments.length >= 3;
+      return reducer(obj, optimizeCb(iteratee, context, 4), memo, initial);
+    };
+  };
+
+  // **Reduce** builds up a single result from a list of values, aka `inject`,
+  // or `foldl`.
+  _.reduce = _.foldl = _.inject = createReduce(1);
+
+  // The right-associative version of reduce, also known as `foldr`.
+  _.reduceRight = _.foldr = createReduce(-1);
+
+  // Return the first value which passes a truth test. Aliased as `detect`.
+  _.find = _.detect = function(obj, predicate, context) {
+    var keyFinder = isArrayLike(obj) ? _.findIndex : _.findKey;
+    var key = keyFinder(obj, predicate, context);
+    if (key !== void 0 && key !== -1) return obj[key];
+  };
+
+  // Return all the elements that pass a truth test.
+  // Aliased as `select`.
+  _.filter = _.select = function(obj, predicate, context) {
+    var results = [];
+    predicate = cb(predicate, context);
+    _.each(obj, function(value, index, list) {
+      if (predicate(value, index, list)) results.push(value);
+    });
+    return results;
+  };
+
+  // Return all the elements for which a truth test fails.
+  _.reject = function(obj, predicate, context) {
+    return _.filter(obj, _.negate(cb(predicate)), context);
+  };
+
+  // Determine whether all of the elements match a truth test.
+  // Aliased as `all`.
+  _.every = _.all = function(obj, predicate, context) {
+    predicate = cb(predicate, context);
+    var keys = !isArrayLike(obj) && _.keys(obj),
+        length = (keys || obj).length;
+    for (var index = 0; index < length; index++) {
+      var currentKey = keys ? keys[index] : index;
+      if (!predicate(obj[currentKey], currentKey, obj)) return false;
+    }
+    return true;
+  };
+
+  // Determine if at least one element in the object matches a truth test.
+  // Aliased as `any`.
+  _.some = _.any = function(obj, predicate, context) {
+    predicate = cb(predicate, context);
+    var keys = !isArrayLike(obj) && _.keys(obj),
+        length = (keys || obj).length;
+    for (var index = 0; index < length; index++) {
+      var currentKey = keys ? keys[index] : index;
+      if (predicate(obj[currentKey], currentKey, obj)) return true;
+    }
+    return false;
+  };
+
+  // Determine if the array or object contains a given item (using `===`).
+  // Aliased as `includes` and `include`.
+  _.contains = _.includes = _.include = function(obj, item, fromIndex, guard) {
+    if (!isArrayLike(obj)) obj = _.values(obj);
+    if (typeof fromIndex != 'number' || guard) fromIndex = 0;
+    return _.indexOf(obj, item, fromIndex) >= 0;
+  };
+
+  // Invoke a method (with arguments) on every item in a collection.
+  _.invoke = restArguments(function(obj, path, args) {
+    var contextPath, func;
+    if (_.isFunction(path)) {
+      func = path;
+    } else if (_.isArray(path)) {
+      contextPath = path.slice(0, -1);
+      path = path[path.length - 1];
+    }
+    return _.map(obj, function(context) {
+      var method = func;
+      if (!method) {
+        if (contextPath && contextPath.length) {
+          context = deepGet(context, contextPath);
+        }
+        if (context == null) return void 0;
+        method = context[path];
+      }
+      return method == null ? method : method.apply(context, args);
+    });
+  });
+
+  // Convenience version of a common use case of `map`: fetching a property.
+  _.pluck = function(obj, key) {
+    return _.map(obj, _.property(key));
+  };
+
+  // Convenience version of a common use case of `filter`: selecting only objects
+  // containing specific `key:value` pairs.
+  _.where = function(obj, attrs) {
+    return _.filter(obj, _.matcher(attrs));
+  };
+
+  // Convenience version of a common use case of `find`: getting the first object
+  // containing specific `key:value` pairs.
+  _.findWhere = function(obj, attrs) {
+    return _.find(obj, _.matcher(attrs));
+  };
+
+  // Return the maximum element (or element-based computation).
+  _.max = function(obj, iteratee, context) {
+    var result = -Infinity, lastComputed = -Infinity,
+        value, computed;
+    if (iteratee == null || typeof iteratee == 'number' && typeof obj[0] != 'object' && obj != null) {
+      obj = isArrayLike(obj) ? obj : _.values(obj);
+      for (var i = 0, length = obj.length; i < length; i++) {
+        value = obj[i];
+        if (value != null && value > result) {
+          result = value;
+        }
+      }
+    } else {
+      iteratee = cb(iteratee, context);
+      _.each(obj, function(v, index, list) {
+        computed = iteratee(v, index, list);
+        if (computed > lastComputed || computed === -Infinity && result === -Infinity) {
+          result = v;
+          lastComputed = computed;
+        }
+      });
+    }
+    return result;
+  };
+
+  // Return the minimum element (or element-based computation).
+  _.min = function(obj, iteratee, context) {
+    var result = Infinity, lastComputed = Infinity,
+        value, computed;
+    if (iteratee == null || typeof iteratee == 'number' && typeof obj[0] != 'object' && obj != null) {
+      obj = isArrayLike(obj) ? obj : _.values(obj);
+      for (var i = 0, length = obj.length; i < length; i++) {
+        value = obj[i];
+        if (value != null && value < result) {
+          result = value;
+        }
+      }
+    } else {
+      iteratee = cb(iteratee, context);
+      _.each(obj, function(v, index, list) {
+        computed = iteratee(v, index, list);
+        if (computed < lastComputed || computed === Infinity && result === Infinity) {
+          result = v;
+          lastComputed = computed;
+        }
+      });
+    }
+    return result;
+  };
+
+  // Shuffle a collection.
+  _.shuffle = function(obj) {
+    return _.sample(obj, Infinity);
+  };
+
+  // Sample **n** random values from a collection using the modern version of the
+  // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
+  // If **n** is not specified, returns a single random element.
+  // The internal `guard` argument allows it to work with `map`.
+  _.sample = function(obj, n, guard) {
+    if (n == null || guard) {
+      if (!isArrayLike(obj)) obj = _.values(obj);
+      return obj[_.random(obj.length - 1)];
+    }
+    var sample = isArrayLike(obj) ? _.clone(obj) : _.values(obj);
+    var length = getLength(sample);
+    n = Math.max(Math.min(n, length), 0);
+    var last = length - 1;
+    for (var index = 0; index < n; index++) {
+      var rand = _.random(index, last);
+      var temp = sample[index];
+      sample[index] = sample[rand];
+      sample[rand] = temp;
+    }
+    return sample.slice(0, n);
+  };
+
+  // Sort the object's values by a criterion produced by an iteratee.
+  _.sortBy = function(obj, iteratee, context) {
+    var index = 0;
+    iteratee = cb(iteratee, context);
+    return _.pluck(_.map(obj, function(value, key, list) {
+      return {
+        value: value,
+        index: index++,
+        criteria: iteratee(value, key, list)
+      };
+    }).sort(function(left, right) {
+      var a = left.criteria;
+      var b = right.criteria;
+      if (a !== b) {
+        if (a > b || a === void 0) return 1;
+        if (a < b || b === void 0) return -1;
+      }
+      return left.index - right.index;
+    }), 'value');
+  };
+
+  // An internal function used for aggregate "group by" operations.
+  var group = function(behavior, partition) {
+    return function(obj, iteratee, context) {
+      var result = partition ? [[], []] : {};
+      iteratee = cb(iteratee, context);
+      _.each(obj, function(value, index) {
+        var key = iteratee(value, index, obj);
+        behavior(result, value, key);
+      });
+      return result;
+    };
+  };
+
+  // Groups the object's values by a criterion. Pass either a string attribute
+  // to group by, or a function that returns the criterion.
+  _.groupBy = group(function(result, value, key) {
+    if (has(result, key)) result[key].push(value); else result[key] = [value];
+  });
+
+  // Indexes the object's values by a criterion, similar to `groupBy`, but for
+  // when you know that your index values will be unique.
+  _.indexBy = group(function(result, value, key) {
+    result[key] = value;
+  });
+
+  // Counts instances of an object that group by a certain criterion. Pass
+  // either a string attribute to count by, or a function that returns the
+  // criterion.
+  _.countBy = group(function(result, value, key) {
+    if (has(result, key)) result[key]++; else result[key] = 1;
+  });
+
+  var reStrSymbol = /[^\ud800-\udfff]|[\ud800-\udbff][\udc00-\udfff]|[\ud800-\udfff]/g;
+  // Safely create a real, live array from anything iterable.
+  _.toArray = function(obj) {
+    if (!obj) return [];
+    if (_.isArray(obj)) return slice.call(obj);
+    if (_.isString(obj)) {
+      // Keep surrogate pair characters together
+      return obj.match(reStrSymbol);
+    }
+    if (isArrayLike(obj)) return _.map(obj, _.identity);
+    return _.values(obj);
+  };
+
+  // Return the number of elements in an object.
+  _.size = function(obj) {
+    if (obj == null) return 0;
+    return isArrayLike(obj) ? obj.length : _.keys(obj).length;
+  };
+
+  // Split a collection into two arrays: one whose elements all satisfy the given
+  // predicate, and one whose elements all do not satisfy the predicate.
+  _.partition = group(function(result, value, pass) {
+    result[pass ? 0 : 1].push(value);
+  }, true);
+
+  // Array Functions
+  // ---------------
+
+  // Get the first element of an array. Passing **n** will return the first N
+  // values in the array. Aliased as `head` and `take`. The **guard** check
+  // allows it to work with `_.map`.
+  _.first = _.head = _.take = function(array, n, guard) {
+    if (array == null || array.length < 1) return n == null ? void 0 : [];
+    if (n == null || guard) return array[0];
+    return _.initial(array, array.length - n);
+  };
+
+  // Returns everything but the last entry of the array. Especially useful on
+  // the arguments object. Passing **n** will return all the values in
+  // the array, excluding the last N.
+  _.initial = function(array, n, guard) {
+    return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
+  };
+
+  // Get the last element of an array. Passing **n** will return the last N
+  // values in the array.
+  _.last = function(array, n, guard) {
+    if (array == null || array.length < 1) return n == null ? void 0 : [];
+    if (n == null || guard) return array[array.length - 1];
+    return _.rest(array, Math.max(0, array.length - n));
+  };
+
+  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
+  // Especially useful on the arguments object. Passing an **n** will return
+  // the rest N values in the array.
+  _.rest = _.tail = _.drop = function(array, n, guard) {
+    return slice.call(array, n == null || guard ? 1 : n);
+  };
+
+  // Trim out all falsy values from an array.
+  _.compact = function(array) {
+    return _.filter(array, Boolean);
+  };
+
+  // Internal implementation of a recursive `flatten` function.
+  var flatten = function(input, shallow, strict, output) {
+    output = output || [];
+    var idx = output.length;
+    for (var i = 0, length = getLength(input); i < length; i++) {
+      var value = input[i];
+      if (isArrayLike(value) && (_.isArray(value) || _.isArguments(value))) {
+        // Flatten current level of array or arguments object.
+        if (shallow) {
+          var j = 0, len = value.length;
+          while (j < len) output[idx++] = value[j++];
+        } else {
+          flatten(value, shallow, strict, output);
+          idx = output.length;
+        }
+      } else if (!strict) {
+        output[idx++] = value;
+      }
+    }
+    return output;
+  };
+
+  // Flatten out an array, either recursively (by default), or just one level.
+  _.flatten = function(array, shallow) {
+    return flatten(array, shallow, false);
+  };
+
+  // Return a version of the array that does not contain the specified value(s).
+  _.without = restArguments(function(array, otherArrays) {
+    return _.difference(array, otherArrays);
+  });
+
+  // Produce a duplicate-free version of the array. If the array has already
+  // been sorted, you have the option of using a faster algorithm.
+  // The faster algorithm will not work with an iteratee if the iteratee
+  // is not a one-to-one function, so providing an iteratee will disable
+  // the faster algorithm.
+  // Aliased as `unique`.
+  _.uniq = _.unique = function(array, isSorted, iteratee, context) {
+    if (!_.isBoolean(isSorted)) {
+      context = iteratee;
+      iteratee = isSorted;
+      isSorted = false;
+    }
+    if (iteratee != null) iteratee = cb(iteratee, context);
+    var result = [];
+    var seen = [];
+    for (var i = 0, length = getLength(array); i < length; i++) {
+      var value = array[i],
+          computed = iteratee ? iteratee(value, i, array) : value;
+      if (isSorted && !iteratee) {
+        if (!i || seen !== computed) result.push(value);
+        seen = computed;
+      } else if (iteratee) {
+        if (!_.contains(seen, computed)) {
+          seen.push(computed);
+          result.push(value);
+        }
+      } else if (!_.contains(result, value)) {
+        result.push(value);
+      }
+    }
+    return result;
+  };
+
+  // Produce an array that contains the union: each distinct element from all of
+  // the passed-in arrays.
+  _.union = restArguments(function(arrays) {
+    return _.uniq(flatten(arrays, true, true));
+  });
+
+  // Produce an array that contains every item shared between all the
+  // passed-in arrays.
+  _.intersection = function(array) {
+    var result = [];
+    var argsLength = arguments.length;
+    for (var i = 0, length = getLength(array); i < length; i++) {
+      var item = array[i];
+      if (_.contains(result, item)) continue;
+      var j;
+      for (j = 1; j < argsLength; j++) {
+        if (!_.contains(arguments[j], item)) break;
+      }
+      if (j === argsLength) result.push(item);
+    }
+    return result;
+  };
+
+  // Take the difference between one array and a number of other arrays.
+  // Only the elements present in just the first array will remain.
+  _.difference = restArguments(function(array, rest) {
+    rest = flatten(rest, true, true);
+    return _.filter(array, function(value){
+      return !_.contains(rest, value);
+    });
+  });
+
+  // Complement of _.zip. Unzip accepts an array of arrays and groups
+  // each array's elements on shared indices.
+  _.unzip = function(array) {
+    var length = array && _.max(array, getLength).length || 0;
+    var result = Array(length);
+
+    for (var index = 0; index < length; index++) {
+      result[index] = _.pluck(array, index);
+    }
+    return result;
+  };
+
+  // Zip together multiple lists into a single array -- elements that share
+  // an index go together.
+  _.zip = restArguments(_.unzip);
+
+  // Converts lists into objects. Pass either a single array of `[key, value]`
+  // pairs, or two parallel arrays of the same length -- one of keys, and one of
+  // the corresponding values. Passing by pairs is the reverse of _.pairs.
+  _.object = function(list, values) {
+    var result = {};
+    for (var i = 0, length = getLength(list); i < length; i++) {
+      if (values) {
+        result[list[i]] = values[i];
+      } else {
+        result[list[i][0]] = list[i][1];
+      }
+    }
+    return result;
+  };
+
+  // Generator function to create the findIndex and findLastIndex functions.
+  var createPredicateIndexFinder = function(dir) {
+    return function(array, predicate, context) {
+      predicate = cb(predicate, context);
+      var length = getLength(array);
+      var index = dir > 0 ? 0 : length - 1;
+      for (; index >= 0 && index < length; index += dir) {
+        if (predicate(array[index], index, array)) return index;
+      }
+      return -1;
+    };
+  };
+
+  // Returns the first index on an array-like that passes a predicate test.
+  _.findIndex = createPredicateIndexFinder(1);
+  _.findLastIndex = createPredicateIndexFinder(-1);
+
+  // Use a comparator function to figure out the smallest index at which
+  // an object should be inserted so as to maintain order. Uses binary search.
+  _.sortedIndex = function(array, obj, iteratee, context) {
+    iteratee = cb(iteratee, context, 1);
+    var value = iteratee(obj);
+    var low = 0, high = getLength(array);
+    while (low < high) {
+      var mid = Math.floor((low + high) / 2);
+      if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;
+    }
+    return low;
+  };
+
+  // Generator function to create the indexOf and lastIndexOf functions.
+  var createIndexFinder = function(dir, predicateFind, sortedIndex) {
+    return function(array, item, idx) {
+      var i = 0, length = getLength(array);
+      if (typeof idx == 'number') {
+        if (dir > 0) {
+          i = idx >= 0 ? idx : Math.max(idx + length, i);
+        } else {
+          length = idx >= 0 ? Math.min(idx + 1, length) : idx + length + 1;
+        }
+      } else if (sortedIndex && idx && length) {
+        idx = sortedIndex(array, item);
+        return array[idx] === item ? idx : -1;
+      }
+      if (item !== item) {
+        idx = predicateFind(slice.call(array, i, length), _.isNaN);
+        return idx >= 0 ? idx + i : -1;
+      }
+      for (idx = dir > 0 ? i : length - 1; idx >= 0 && idx < length; idx += dir) {
+        if (array[idx] === item) return idx;
+      }
+      return -1;
+    };
+  };
+
+  // Return the position of the first occurrence of an item in an array,
+  // or -1 if the item is not included in the array.
+  // If the array is large and already in sort order, pass `true`
+  // for **isSorted** to use binary search.
+  _.indexOf = createIndexFinder(1, _.findIndex, _.sortedIndex);
+  _.lastIndexOf = createIndexFinder(-1, _.findLastIndex);
+
+  // Generate an integer Array containing an arithmetic progression. A port of
+  // the native Python `range()` function. See
+  // [the Python documentation](http://docs.python.org/library/functions.html#range).
+  _.range = function(start, stop, step) {
+    if (stop == null) {
+      stop = start || 0;
+      start = 0;
+    }
+    if (!step) {
+      step = stop < start ? -1 : 1;
+    }
+
+    var length = Math.max(Math.ceil((stop - start) / step), 0);
+    var range = Array(length);
+
+    for (var idx = 0; idx < length; idx++, start += step) {
+      range[idx] = start;
+    }
+
+    return range;
+  };
+
+  // Chunk a single array into multiple arrays, each containing `count` or fewer
+  // items.
+  _.chunk = function(array, count) {
+    if (count == null || count < 1) return [];
+    var result = [];
+    var i = 0, length = array.length;
+    while (i < length) {
+      result.push(slice.call(array, i, i += count));
+    }
+    return result;
+  };
+
+  // Function (ahem) Functions
+  // ------------------
+
+  // Determines whether to execute a function as a constructor
+  // or a normal function with the provided arguments.
+  var executeBound = function(sourceFunc, boundFunc, context, callingContext, args) {
+    if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
+    var self = baseCreate(sourceFunc.prototype);
+    var result = sourceFunc.apply(self, args);
+    if (_.isObject(result)) return result;
+    return self;
+  };
+
+  // Create a function bound to a given object (assigning `this`, and arguments,
+  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
+  // available.
+  _.bind = restArguments(function(func, context, args) {
+    if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function');
+    var bound = restArguments(function(callArgs) {
+      return executeBound(func, bound, context, this, args.concat(callArgs));
+    });
+    return bound;
+  });
+
+  // Partially apply a function by creating a version that has had some of its
+  // arguments pre-filled, without changing its dynamic `this` context. _ acts
+  // as a placeholder by default, allowing any combination of arguments to be
+  // pre-filled. Set `_.partial.placeholder` for a custom placeholder argument.
+  _.partial = restArguments(function(func, boundArgs) {
+    var placeholder = _.partial.placeholder;
+    var bound = function() {
+      var position = 0, length = boundArgs.length;
+      var args = Array(length);
+      for (var i = 0; i < length; i++) {
+        args[i] = boundArgs[i] === placeholder ? arguments[position++] : boundArgs[i];
+      }
+      while (position < arguments.length) args.push(arguments[position++]);
+      return executeBound(func, bound, this, this, args);
+    };
+    return bound;
+  });
+
+  _.partial.placeholder = _;
+
+  // Bind a number of an object's methods to that object. Remaining arguments
+  // are the method names to be bound. Useful for ensuring that all callbacks
+  // defined on an object belong to it.
+  _.bindAll = restArguments(function(obj, keys) {
+    keys = flatten(keys, false, false);
+    var index = keys.length;
+    if (index < 1) throw new Error('bindAll must be passed function names');
+    while (index--) {
+      var key = keys[index];
+      obj[key] = _.bind(obj[key], obj);
+    }
+  });
+
+  // Memoize an expensive function by storing its results.
+  _.memoize = function(func, hasher) {
+    var memoize = function(key) {
+      var cache = memoize.cache;
+      var address = '' + (hasher ? hasher.apply(this, arguments) : key);
+      if (!has(cache, address)) cache[address] = func.apply(this, arguments);
+      return cache[address];
+    };
+    memoize.cache = {};
+    return memoize;
+  };
+
+  // Delays a function for the given number of milliseconds, and then calls
+  // it with the arguments supplied.
+  _.delay = restArguments(function(func, wait, args) {
+    return setTimeout(function() {
+      return func.apply(null, args);
+    }, wait);
+  });
+
+  // Defers a function, scheduling it to run after the current call stack has
+  // cleared.
+  _.defer = _.partial(_.delay, _, 1);
+
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time. Normally, the throttled function will run
+  // as much as it can, without ever going more than once per `wait` duration;
+  // but if you'd like to disable the execution on the leading edge, pass
+  // `{leading: false}`. To disable execution on the trailing edge, ditto.
+  _.throttle = function(func, wait, options) {
+    var timeout, context, args, result;
+    var previous = 0;
+    if (!options) options = {};
+
+    var later = function() {
+      previous = options.leading === false ? 0 : _.now();
+      timeout = null;
+      result = func.apply(context, args);
+      if (!timeout) context = args = null;
+    };
+
+    var throttled = function() {
+      var now = _.now();
+      if (!previous && options.leading === false) previous = now;
+      var remaining = wait - (now - previous);
+      context = this;
+      args = arguments;
+      if (remaining <= 0 || remaining > wait) {
+        if (timeout) {
+          clearTimeout(timeout);
+          timeout = null;
+        }
+        previous = now;
+        result = func.apply(context, args);
+        if (!timeout) context = args = null;
+      } else if (!timeout && options.trailing !== false) {
+        timeout = setTimeout(later, remaining);
+      }
+      return result;
+    };
+
+    throttled.cancel = function() {
+      clearTimeout(timeout);
+      previous = 0;
+      timeout = context = args = null;
+    };
+
+    return throttled;
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds. If `immediate` is passed, trigger the function on the
+  // leading edge, instead of the trailing.
+  _.debounce = function(func, wait, immediate) {
+    var timeout, result;
+
+    var later = function(context, args) {
+      timeout = null;
+      if (args) result = func.apply(context, args);
+    };
+
+    var debounced = restArguments(function(args) {
+      if (timeout) clearTimeout(timeout);
+      if (immediate) {
+        var callNow = !timeout;
+        timeout = setTimeout(later, wait);
+        if (callNow) result = func.apply(this, args);
+      } else {
+        timeout = _.delay(later, wait, this, args);
+      }
+
+      return result;
+    });
+
+    debounced.cancel = function() {
+      clearTimeout(timeout);
+      timeout = null;
+    };
+
+    return debounced;
+  };
+
+  // Returns the first function passed as an argument to the second,
+  // allowing you to adjust arguments, run code before and after, and
+  // conditionally execute the original function.
+  _.wrap = function(func, wrapper) {
+    return _.partial(wrapper, func);
+  };
+
+  // Returns a negated version of the passed-in predicate.
+  _.negate = function(predicate) {
+    return function() {
+      return !predicate.apply(this, arguments);
+    };
+  };
+
+  // Returns a function that is the composition of a list of functions, each
+  // consuming the return value of the function that follows.
+  _.compose = function() {
+    var args = arguments;
+    var start = args.length - 1;
+    return function() {
+      var i = start;
+      var result = args[start].apply(this, arguments);
+      while (i--) result = args[i].call(this, result);
+      return result;
+    };
+  };
+
+  // Returns a function that will only be executed on and after the Nth call.
+  _.after = function(times, func) {
+    return function() {
+      if (--times < 1) {
+        return func.apply(this, arguments);
+      }
+    };
+  };
+
+  // Returns a function that will only be executed up to (but not including) the Nth call.
+  _.before = function(times, func) {
+    var memo;
+    return function() {
+      if (--times > 0) {
+        memo = func.apply(this, arguments);
+      }
+      if (times <= 1) func = null;
+      return memo;
+    };
+  };
+
+  // Returns a function that will be executed at most one time, no matter how
+  // often you call it. Useful for lazy initialization.
+  _.once = _.partial(_.before, 2);
+
+  _.restArguments = restArguments;
+
+  // Object Functions
+  // ----------------
+
+  // Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
+  var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
+  var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
+    'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];
+
+  var collectNonEnumProps = function(obj, keys) {
+    var nonEnumIdx = nonEnumerableProps.length;
+    var constructor = obj.constructor;
+    var proto = _.isFunction(constructor) && constructor.prototype || ObjProto;
+
+    // Constructor is a special case.
+    var prop = 'constructor';
+    if (has(obj, prop) && !_.contains(keys, prop)) keys.push(prop);
+
+    while (nonEnumIdx--) {
+      prop = nonEnumerableProps[nonEnumIdx];
+      if (prop in obj && obj[prop] !== proto[prop] && !_.contains(keys, prop)) {
+        keys.push(prop);
+      }
+    }
+  };
+
+  // Retrieve the names of an object's own properties.
+  // Delegates to **ECMAScript 5**'s native `Object.keys`.
+  _.keys = function(obj) {
+    if (!_.isObject(obj)) return [];
+    if (nativeKeys) return nativeKeys(obj);
+    var keys = [];
+    for (var key in obj) if (has(obj, key)) keys.push(key);
+    // Ahem, IE < 9.
+    if (hasEnumBug) collectNonEnumProps(obj, keys);
+    return keys;
+  };
+
+  // Retrieve all the property names of an object.
+  _.allKeys = function(obj) {
+    if (!_.isObject(obj)) return [];
+    var keys = [];
+    for (var key in obj) keys.push(key);
+    // Ahem, IE < 9.
+    if (hasEnumBug) collectNonEnumProps(obj, keys);
+    return keys;
+  };
+
+  // Retrieve the values of an object's properties.
+  _.values = function(obj) {
+    var keys = _.keys(obj);
+    var length = keys.length;
+    var values = Array(length);
+    for (var i = 0; i < length; i++) {
+      values[i] = obj[keys[i]];
+    }
+    return values;
+  };
+
+  // Returns the results of applying the iteratee to each element of the object.
+  // In contrast to _.map it returns an object.
+  _.mapObject = function(obj, iteratee, context) {
+    iteratee = cb(iteratee, context);
+    var keys = _.keys(obj),
+        length = keys.length,
+        results = {};
+    for (var index = 0; index < length; index++) {
+      var currentKey = keys[index];
+      results[currentKey] = iteratee(obj[currentKey], currentKey, obj);
+    }
+    return results;
+  };
+
+  // Convert an object into a list of `[key, value]` pairs.
+  // The opposite of _.object.
+  _.pairs = function(obj) {
+    var keys = _.keys(obj);
+    var length = keys.length;
+    var pairs = Array(length);
+    for (var i = 0; i < length; i++) {
+      pairs[i] = [keys[i], obj[keys[i]]];
+    }
+    return pairs;
+  };
+
+  // Invert the keys and values of an object. The values must be serializable.
+  _.invert = function(obj) {
+    var result = {};
+    var keys = _.keys(obj);
+    for (var i = 0, length = keys.length; i < length; i++) {
+      result[obj[keys[i]]] = keys[i];
+    }
+    return result;
+  };
+
+  // Return a sorted list of the function names available on the object.
+  // Aliased as `methods`.
+  _.functions = _.methods = function(obj) {
+    var names = [];
+    for (var key in obj) {
+      if (_.isFunction(obj[key])) names.push(key);
+    }
+    return names.sort();
+  };
+
+  // An internal function for creating assigner functions.
+  var createAssigner = function(keysFunc, defaults) {
+    return function(obj) {
+      var length = arguments.length;
+      if (defaults) obj = Object(obj);
+      if (length < 2 || obj == null) return obj;
+      for (var index = 1; index < length; index++) {
+        var source = arguments[index],
+            keys = keysFunc(source),
+            l = keys.length;
+        for (var i = 0; i < l; i++) {
+          var key = keys[i];
+          if (!defaults || obj[key] === void 0) obj[key] = source[key];
+        }
+      }
+      return obj;
+    };
+  };
+
+  // Extend a given object with all the properties in passed-in object(s).
+  _.extend = createAssigner(_.allKeys);
+
+  // Assigns a given object with all the own properties in the passed-in object(s).
+  // (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
+  _.extendOwn = _.assign = createAssigner(_.keys);
+
+  // Returns the first key on an object that passes a predicate test.
+  _.findKey = function(obj, predicate, context) {
+    predicate = cb(predicate, context);
+    var keys = _.keys(obj), key;
+    for (var i = 0, length = keys.length; i < length; i++) {
+      key = keys[i];
+      if (predicate(obj[key], key, obj)) return key;
+    }
+  };
+
+  // Internal pick helper function to determine if `obj` has key `key`.
+  var keyInObj = function(value, key, obj) {
+    return key in obj;
+  };
+
+  // Return a copy of the object only containing the whitelisted properties.
+  _.pick = restArguments(function(obj, keys) {
+    var result = {}, iteratee = keys[0];
+    if (obj == null) return result;
+    if (_.isFunction(iteratee)) {
+      if (keys.length > 1) iteratee = optimizeCb(iteratee, keys[1]);
+      keys = _.allKeys(obj);
+    } else {
+      iteratee = keyInObj;
+      keys = flatten(keys, false, false);
+      obj = Object(obj);
+    }
+    for (var i = 0, length = keys.length; i < length; i++) {
+      var key = keys[i];
+      var value = obj[key];
+      if (iteratee(value, key, obj)) result[key] = value;
+    }
+    return result;
+  });
+
+  // Return a copy of the object without the blacklisted properties.
+  _.omit = restArguments(function(obj, keys) {
+    var iteratee = keys[0], context;
+    if (_.isFunction(iteratee)) {
+      iteratee = _.negate(iteratee);
+      if (keys.length > 1) context = keys[1];
+    } else {
+      keys = _.map(flatten(keys, false, false), String);
+      iteratee = function(value, key) {
+        return !_.contains(keys, key);
+      };
+    }
+    return _.pick(obj, iteratee, context);
+  });
+
+  // Fill in a given object with default properties.
+  _.defaults = createAssigner(_.allKeys, true);
+
+  // Creates an object that inherits from the given prototype object.
+  // If additional properties are provided then they will be added to the
+  // created object.
+  _.create = function(prototype, props) {
+    var result = baseCreate(prototype);
+    if (props) _.extendOwn(result, props);
+    return result;
+  };
+
+  // Create a (shallow-cloned) duplicate of an object.
+  _.clone = function(obj) {
+    if (!_.isObject(obj)) return obj;
+    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
+  };
+
+  // Invokes interceptor with the obj, and then returns obj.
+  // The primary purpose of this method is to "tap into" a method chain, in
+  // order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  };
+
+  // Returns whether an object has a given set of `key:value` pairs.
+  _.isMatch = function(object, attrs) {
+    var keys = _.keys(attrs), length = keys.length;
+    if (object == null) return !length;
+    var obj = Object(object);
+    for (var i = 0; i < length; i++) {
+      var key = keys[i];
+      if (attrs[key] !== obj[key] || !(key in obj)) return false;
+    }
+    return true;
+  };
+
+
+  // Internal recursive comparison function for `isEqual`.
+  var eq, deepEq;
+  eq = function(a, b, aStack, bStack) {
+    // Identical objects are equal. `0 === -0`, but they aren't identical.
+    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
+    if (a === b) return a !== 0 || 1 / a === 1 / b;
+    // `null` or `undefined` only equal to itself (strict comparison).
+    if (a == null || b == null) return false;
+    // `NaN`s are equivalent, but non-reflexive.
+    if (a !== a) return b !== b;
+    // Exhaust primitive checks
+    var type = typeof a;
+    if (type !== 'function' && type !== 'object' && typeof b != 'object') return false;
+    return deepEq(a, b, aStack, bStack);
+  };
+
+  // Internal recursive comparison function for `isEqual`.
+  deepEq = function(a, b, aStack, bStack) {
+    // Unwrap any wrapped objects.
+    if (a instanceof _) a = a._wrapped;
+    if (b instanceof _) b = b._wrapped;
+    // Compare `[[Class]]` names.
+    var className = toString.call(a);
+    if (className !== toString.call(b)) return false;
+    switch (className) {
+      // Strings, numbers, regular expressions, dates, and booleans are compared by value.
+      case '[object RegExp]':
+      // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
+      case '[object String]':
+        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
+        // equivalent to `new String("5")`.
+        return '' + a === '' + b;
+      case '[object Number]':
+        // `NaN`s are equivalent, but non-reflexive.
+        // Object(NaN) is equivalent to NaN.
+        if (+a !== +a) return +b !== +b;
+        // An `egal` comparison is performed for other numeric values.
+        return +a === 0 ? 1 / +a === 1 / b : +a === +b;
+      case '[object Date]':
+      case '[object Boolean]':
+        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
+        // millisecond representations. Note that invalid dates with millisecond representations
+        // of `NaN` are not equivalent.
+        return +a === +b;
+      case '[object Symbol]':
+        return SymbolProto.valueOf.call(a) === SymbolProto.valueOf.call(b);
+    }
+
+    var areArrays = className === '[object Array]';
+    if (!areArrays) {
+      if (typeof a != 'object' || typeof b != 'object') return false;
+
+      // Objects with different constructors are not equivalent, but `Object`s or `Array`s
+      // from different frames are.
+      var aCtor = a.constructor, bCtor = b.constructor;
+      if (aCtor !== bCtor && !(_.isFunction(aCtor) && aCtor instanceof aCtor &&
+                               _.isFunction(bCtor) && bCtor instanceof bCtor)
+                          && ('constructor' in a && 'constructor' in b)) {
+        return false;
+      }
+    }
+    // Assume equality for cyclic structures. The algorithm for detecting cyclic
+    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
+
+    // Initializing stack of traversed objects.
+    // It's done here since we only need them for objects and arrays comparison.
+    aStack = aStack || [];
+    bStack = bStack || [];
+    var length = aStack.length;
+    while (length--) {
+      // Linear search. Performance is inversely proportional to the number of
+      // unique nested structures.
+      if (aStack[length] === a) return bStack[length] === b;
+    }
+
+    // Add the first object to the stack of traversed objects.
+    aStack.push(a);
+    bStack.push(b);
+
+    // Recursively compare objects and arrays.
+    if (areArrays) {
+      // Compare array lengths to determine if a deep comparison is necessary.
+      length = a.length;
+      if (length !== b.length) return false;
+      // Deep compare the contents, ignoring non-numeric properties.
+      while (length--) {
+        if (!eq(a[length], b[length], aStack, bStack)) return false;
+      }
+    } else {
+      // Deep compare objects.
+      var keys = _.keys(a), key;
+      length = keys.length;
+      // Ensure that both objects contain the same number of properties before comparing deep equality.
+      if (_.keys(b).length !== length) return false;
+      while (length--) {
+        // Deep compare each member
+        key = keys[length];
+        if (!(has(b, key) && eq(a[key], b[key], aStack, bStack))) return false;
+      }
+    }
+    // Remove the first object from the stack of traversed objects.
+    aStack.pop();
+    bStack.pop();
+    return true;
+  };
+
+  // Perform a deep comparison to check if two objects are equal.
+  _.isEqual = function(a, b) {
+    return eq(a, b);
+  };
+
+  // Is a given array, string, or object empty?
+  // An "empty" object has no enumerable own-properties.
+  _.isEmpty = function(obj) {
+    if (obj == null) return true;
+    if (isArrayLike(obj) && (_.isArray(obj) || _.isString(obj) || _.isArguments(obj))) return obj.length === 0;
+    return _.keys(obj).length === 0;
+  };
+
+  // Is a given value a DOM element?
+  _.isElement = function(obj) {
+    return !!(obj && obj.nodeType === 1);
+  };
+
+  // Is a given value an array?
+  // Delegates to ECMA5's native Array.isArray
+  _.isArray = nativeIsArray || function(obj) {
+    return toString.call(obj) === '[object Array]';
+  };
+
+  // Is a given variable an object?
+  _.isObject = function(obj) {
+    var type = typeof obj;
+    return type === 'function' || type === 'object' && !!obj;
+  };
+
+  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp, isError, isMap, isWeakMap, isSet, isWeakSet.
+  _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp', 'Error', 'Symbol', 'Map', 'WeakMap', 'Set', 'WeakSet'], function(name) {
+    _['is' + name] = function(obj) {
+      return toString.call(obj) === '[object ' + name + ']';
+    };
+  });
+
+  // Define a fallback version of the method in browsers (ahem, IE < 9), where
+  // there isn't any inspectable "Arguments" type.
+  if (!_.isArguments(arguments)) {
+    _.isArguments = function(obj) {
+      return has(obj, 'callee');
+    };
+  }
+
+  // Optimize `isFunction` if appropriate. Work around some typeof bugs in old v8,
+  // IE 11 (#1621), Safari 8 (#1929), and PhantomJS (#2236).
+  var nodelist = root.document && root.document.childNodes;
+  if (typeof /./ != 'function' && typeof Int8Array != 'object' && typeof nodelist != 'function') {
+    _.isFunction = function(obj) {
+      return typeof obj == 'function' || false;
+    };
+  }
+
+  // Is a given object a finite number?
+  _.isFinite = function(obj) {
+    return !_.isSymbol(obj) && isFinite(obj) && !isNaN(parseFloat(obj));
+  };
+
+  // Is the given value `NaN`?
+  _.isNaN = function(obj) {
+    return _.isNumber(obj) && isNaN(obj);
+  };
+
+  // Is a given value a boolean?
+  _.isBoolean = function(obj) {
+    return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
+  };
+
+  // Is a given value equal to null?
+  _.isNull = function(obj) {
+    return obj === null;
+  };
+
+  // Is a given variable undefined?
+  _.isUndefined = function(obj) {
+    return obj === void 0;
+  };
+
+  // Shortcut function for checking if an object has a given property directly
+  // on itself (in other words, not on a prototype).
+  _.has = function(obj, path) {
+    if (!_.isArray(path)) {
+      return has(obj, path);
+    }
+    var length = path.length;
+    for (var i = 0; i < length; i++) {
+      var key = path[i];
+      if (obj == null || !hasOwnProperty.call(obj, key)) {
+        return false;
+      }
+      obj = obj[key];
+    }
+    return !!length;
+  };
+
+  // Utility Functions
+  // -----------------
+
+  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
+  // previous owner. Returns a reference to the Underscore object.
+  _.noConflict = function() {
+    root._ = previousUnderscore;
+    return this;
+  };
+
+  // Keep the identity function around for default iteratees.
+  _.identity = function(value) {
+    return value;
+  };
+
+  // Predicate-generating functions. Often useful outside of Underscore.
+  _.constant = function(value) {
+    return function() {
+      return value;
+    };
+  };
+
+  _.noop = function(){};
+
+  // Creates a function that, when passed an object, will traverse that object’s
+  // properties down the given `path`, specified as an array of keys or indexes.
+  _.property = function(path) {
+    if (!_.isArray(path)) {
+      return shallowProperty(path);
+    }
+    return function(obj) {
+      return deepGet(obj, path);
+    };
+  };
+
+  // Generates a function for a given object that returns a given property.
+  _.propertyOf = function(obj) {
+    if (obj == null) {
+      return function(){};
+    }
+    return function(path) {
+      return !_.isArray(path) ? obj[path] : deepGet(obj, path);
+    };
+  };
+
+  // Returns a predicate for checking whether an object has a given set of
+  // `key:value` pairs.
+  _.matcher = _.matches = function(attrs) {
+    attrs = _.extendOwn({}, attrs);
+    return function(obj) {
+      return _.isMatch(obj, attrs);
+    };
+  };
+
+  // Run a function **n** times.
+  _.times = function(n, iteratee, context) {
+    var accum = Array(Math.max(0, n));
+    iteratee = optimizeCb(iteratee, context, 1);
+    for (var i = 0; i < n; i++) accum[i] = iteratee(i);
+    return accum;
+  };
+
+  // Return a random integer between min and max (inclusive).
+  _.random = function(min, max) {
+    if (max == null) {
+      max = min;
+      min = 0;
+    }
+    return min + Math.floor(Math.random() * (max - min + 1));
+  };
+
+  // A (possibly faster) way to get the current timestamp as an integer.
+  _.now = Date.now || function() {
+    return new Date().getTime();
+  };
+
+  // List of HTML entities for escaping.
+  var escapeMap = {
+    '&': '&amp;',
+    '<': '&lt;',
+    '>': '&gt;',
+    '"': '&quot;',
+    "'": '&#x27;',
+    '`': '&#x60;'
+  };
+  var unescapeMap = _.invert(escapeMap);
+
+  // Functions for escaping and unescaping strings to/from HTML interpolation.
+  var createEscaper = function(map) {
+    var escaper = function(match) {
+      return map[match];
+    };
+    // Regexes for identifying a key that needs to be escaped.
+    var source = '(?:' + _.keys(map).join('|') + ')';
+    var testRegexp = RegExp(source);
+    var replaceRegexp = RegExp(source, 'g');
+    return function(string) {
+      string = string == null ? '' : '' + string;
+      return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
+    };
+  };
+  _.escape = createEscaper(escapeMap);
+  _.unescape = createEscaper(unescapeMap);
+
+  // Traverses the children of `obj` along `path`. If a child is a function, it
+  // is invoked with its parent as context. Returns the value of the final
+  // child, or `fallback` if any child is undefined.
+  _.result = function(obj, path, fallback) {
+    if (!_.isArray(path)) path = [path];
+    var length = path.length;
+    if (!length) {
+      return _.isFunction(fallback) ? fallback.call(obj) : fallback;
+    }
+    for (var i = 0; i < length; i++) {
+      var prop = obj == null ? void 0 : obj[path[i]];
+      if (prop === void 0) {
+        prop = fallback;
+        i = length; // Ensure we don't continue iterating.
+      }
+      obj = _.isFunction(prop) ? prop.call(obj) : prop;
+    }
+    return obj;
+  };
+
+  // Generate a unique integer id (unique within the entire client session).
+  // Useful for temporary DOM ids.
+  var idCounter = 0;
+  _.uniqueId = function(prefix) {
+    var id = ++idCounter + '';
+    return prefix ? prefix + id : id;
+  };
+
+  // By default, Underscore uses ERB-style template delimiters, change the
+  // following template settings to use alternative delimiters.
+  _.templateSettings = {
+    evaluate: /<%([\s\S]+?)%>/g,
+    interpolate: /<%=([\s\S]+?)%>/g,
+    escape: /<%-([\s\S]+?)%>/g
+  };
+
+  // When customizing `templateSettings`, if you don't want to define an
+  // interpolation, evaluation or escaping regex, we need one that is
+  // guaranteed not to match.
+  var noMatch = /(.)^/;
+
+  // Certain characters need to be escaped so that they can be put into a
+  // string literal.
+  var escapes = {
+    "'": "'",
+    '\\': '\\',
+    '\r': 'r',
+    '\n': 'n',
+    '\u2028': 'u2028',
+    '\u2029': 'u2029'
+  };
+
+  var escapeRegExp = /\\|'|\r|\n|\u2028|\u2029/g;
+
+  var escapeChar = function(match) {
+    return '\\' + escapes[match];
+  };
+
+  // JavaScript micro-templating, similar to John Resig's implementation.
+  // Underscore templating handles arbitrary delimiters, preserves whitespace,
+  // and correctly escapes quotes within interpolated code.
+  // NB: `oldSettings` only exists for backwards compatibility.
+  _.template = function(text, settings, oldSettings) {
+    if (!settings && oldSettings) settings = oldSettings;
+    settings = _.defaults({}, settings, _.templateSettings);
+
+    // Combine delimiters into one regular expression via alternation.
+    var matcher = RegExp([
+      (settings.escape || noMatch).source,
+      (settings.interpolate || noMatch).source,
+      (settings.evaluate || noMatch).source
+    ].join('|') + '|$', 'g');
+
+    // Compile the template source, escaping string literals appropriately.
+    var index = 0;
+    var source = "__p+='";
+    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
+      source += text.slice(index, offset).replace(escapeRegExp, escapeChar);
+      index = offset + match.length;
+
+      if (escape) {
+        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
+      } else if (interpolate) {
+        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
+      } else if (evaluate) {
+        source += "';\n" + evaluate + "\n__p+='";
+      }
+
+      // Adobe VMs need the match returned to produce the correct offset.
+      return match;
+    });
+    source += "';\n";
+
+    // If a variable is not specified, place data values in local scope.
+    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
+
+    source = "var __t,__p='',__j=Array.prototype.join," +
+      "print=function(){__p+=__j.call(arguments,'');};\n" +
+      source + 'return __p;\n';
+
+    var render;
+    try {
+      render = new Function(settings.variable || 'obj', '_', source);
+    } catch (e) {
+      e.source = source;
+      throw e;
+    }
+
+    var template = function(data) {
+      return render.call(this, data, _);
+    };
+
+    // Provide the compiled source as a convenience for precompilation.
+    var argument = settings.variable || 'obj';
+    template.source = 'function(' + argument + '){\n' + source + '}';
+
+    return template;
+  };
+
+  // Add a "chain" function. Start chaining a wrapped Underscore object.
+  _.chain = function(obj) {
+    var instance = _(obj);
+    instance._chain = true;
+    return instance;
+  };
+
+  // OOP
+  // ---------------
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+
+  // Helper function to continue chaining intermediate results.
+  var chainResult = function(instance, obj) {
+    return instance._chain ? _(obj).chain() : obj;
+  };
+
+  // Add your own custom functions to the Underscore object.
+  _.mixin = function(obj) {
+    _.each(_.functions(obj), function(name) {
+      var func = _[name] = obj[name];
+      _.prototype[name] = function() {
+        var args = [this._wrapped];
+        push.apply(args, arguments);
+        return chainResult(this, func.apply(_, args));
+      };
+    });
+    return _;
+  };
+
+  // Add all of the Underscore functions to the wrapper object.
+  _.mixin(_);
+
+  // Add all mutator Array functions to the wrapper.
+  _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      var obj = this._wrapped;
+      method.apply(obj, arguments);
+      if ((name === 'shift' || name === 'splice') && obj.length === 0) delete obj[0];
+      return chainResult(this, obj);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  _.each(['concat', 'join', 'slice'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      return chainResult(this, method.apply(this._wrapped, arguments));
+    };
+  });
+
+  // Extracts the result from a wrapped and chained object.
+  _.prototype.value = function() {
+    return this._wrapped;
+  };
+
+  // Provide unwrapping proxy for some methods used in engine operations
+  // such as arithmetic and JSON stringification.
+  _.prototype.valueOf = _.prototype.toJSON = _.prototype.value;
+
+  _.prototype.toString = function() {
+    return String(this._wrapped);
+  };
+
+  // AMD registration happens at the end for compatibility with AMD loaders
+  // that may not enforce next-turn semantics on modules. Even though general
+  // practice for AMD registration is to be anonymous, underscore registers
+  // as a named module because, like jQuery, it is a base library that is
+  // popular enough to be bundled in a third party lib, but not be part of
+  // an AMD load request. Those cases could generate an error when an
+  // anonymous define() is called outside of a loader request.
+  if (typeof define == 'function' && define.amd) {
+    define('underscore', [], function() {
+      return _;
+    });
+  }
+}());
+//     Backbone.js 1.4.0
+
+//     (c) 2010-2019 Jeremy Ashkenas and DocumentCloud
+//     Backbone may be freely distributed under the MIT license.
+//     For all details and documentation:
+//     http://backbonejs.org
+
+(function(factory) {
+
+  // Establish the root object, `window` (`self`) in the browser, or `global` on the server.
+  // We use `self` instead of `window` for `WebWorker` support.
+  var root = typeof self == 'object' && self.self === self && self ||
+            typeof global == 'object' && global.global === global && global;
+
+  // Set up Backbone appropriately for the environment. Start with AMD.
+  if (typeof define === 'function' && define.amd) {
+    define(['underscore', 'jquery', 'exports'], function(_, $, exports) {
+      // Export global even in AMD case in case this script is loaded with
+      // others that may still expect a global Backbone.
+      root.Backbone = factory(root, exports, _, $);
+    });
+
+  // Next for Node.js or CommonJS. jQuery may not be needed as a module.
+  } else if (typeof exports !== 'undefined') {
+    var _ = require('underscore'), $;
+    try { $ = require('jquery'); } catch (e) {}
+    factory(root, exports, _, $);
+
+  // Finally, as a browser global.
+  } else {
+    root.Backbone = factory(root, {}, root._, root.jQuery || root.Zepto || root.ender || root.$);
+  }
+
+})(function(root, Backbone, _, $) {
+
+  // Initial Setup
+  // -------------
+
+  // Save the previous value of the `Backbone` variable, so that it can be
+  // restored later on, if `noConflict` is used.
+  var previousBackbone = root.Backbone;
+
+  // Create a local reference to a common array method we'll want to use later.
+  var slice = Array.prototype.slice;
+
+  // Current version of the library. Keep in sync with `package.json`.
+  Backbone.VERSION = '1.4.0';
+
+  // For Backbone's purposes, jQuery, Zepto, Ender, or My Library (kidding) owns
+  // the `$` variable.
+  Backbone.$ = $;
+
+  // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
+  // to its previous owner. Returns a reference to this Backbone object.
+  Backbone.noConflict = function() {
+    root.Backbone = previousBackbone;
+    return this;
+  };
+
+  // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
+  // will fake `"PATCH"`, `"PUT"` and `"DELETE"` requests via the `_method` parameter and
+  // set a `X-Http-Method-Override` header.
+  Backbone.emulateHTTP = false;
+
+  // Turn on `emulateJSON` to support legacy servers that can't deal with direct
+  // `application/json` requests ... this will encode the body as
+  // `application/x-www-form-urlencoded` instead and will send the model in a
+  // form param named `model`.
+  Backbone.emulateJSON = false;
+
+  // Backbone.Events
+  // ---------------
+
+  // A module that can be mixed in to *any object* in order to provide it with
+  // a custom event channel. You may bind a callback to an event with `on` or
+  // remove with `off`; `trigger`-ing an event fires all callbacks in
+  // succession.
+  //
+  //     var object = {};
+  //     _.extend(object, Backbone.Events);
+  //     object.on('expand', function(){ alert('expanded'); });
+  //     object.trigger('expand');
+  //
+  var Events = Backbone.Events = {};
+
+  // Regular expression used to split event strings.
+  var eventSplitter = /\s+/;
+
+  // A private global variable to share between listeners and listenees.
+  var _listening;
+
+  // Iterates over the standard `event, callback` (as well as the fancy multiple
+  // space-separated events `"change blur", callback` and jQuery-style event
+  // maps `{event: callback}`).
+  var eventsApi = function(iteratee, events, name, callback, opts) {
+    var i = 0, names;
+    if (name && typeof name === 'object') {
+      // Handle event maps.
+      if (callback !== void 0 && 'context' in opts && opts.context === void 0) opts.context = callback;
+      for (names = _.keys(name); i < names.length ; i++) {
+        events = eventsApi(iteratee, events, names[i], name[names[i]], opts);
+      }
+    } else if (name && eventSplitter.test(name)) {
+      // Handle space-separated event names by delegating them individually.
+      for (names = name.split(eventSplitter); i < names.length; i++) {
+        events = iteratee(events, names[i], callback, opts);
+      }
+    } else {
+      // Finally, standard events.
+      events = iteratee(events, name, callback, opts);
+    }
+    return events;
+  };
+
+  // Bind an event to a `callback` function. Passing `"all"` will bind
+  // the callback to all events fired.
+  Events.on = function(name, callback, context) {
+    this._events = eventsApi(onApi, this._events || {}, name, callback, {
+      context: context,
+      ctx: this,
+      listening: _listening
+    });
+
+    if (_listening) {
+      var listeners = this._listeners || (this._listeners = {});
+      listeners[_listening.id] = _listening;
+      // Allow the listening to use a counter, instead of tracking
+      // callbacks for library interop
+      _listening.interop = false;
+    }
+
+    return this;
+  };
+
+  // Inversion-of-control versions of `on`. Tell *this* object to listen to
+  // an event in another object... keeping track of what it's listening to
+  // for easier unbinding later.
+  Events.listenTo = function(obj, name, callback) {
+    if (!obj) return this;
+    var id = obj._listenId || (obj._listenId = _.uniqueId('l'));
+    var listeningTo = this._listeningTo || (this._listeningTo = {});
+    var listening = _listening = listeningTo[id];
+
+    // This object is not listening to any other events on `obj` yet.
+    // Setup the necessary references to track the listening callbacks.
+    if (!listening) {
+      this._listenId || (this._listenId = _.uniqueId('l'));
+      listening = _listening = listeningTo[id] = new Listening(this, obj);
+    }
+
+    // Bind callbacks on obj.
+    var error = tryCatchOn(obj, name, callback, this);
+    _listening = void 0;
+
+    if (error) throw error;
+    // If the target obj is not Backbone.Events, track events manually.
+    if (listening.interop) listening.on(name, callback);
+
+    return this;
+  };
+
+  // The reducing API that adds a callback to the `events` object.
+  var onApi = function(events, name, callback, options) {
+    if (callback) {
+      var handlers = events[name] || (events[name] = []);
+      var context = options.context, ctx = options.ctx, listening = options.listening;
+      if (listening) listening.count++;
+
+      handlers.push({callback: callback, context: context, ctx: context || ctx, listening: listening});
+    }
+    return events;
+  };
+
+  // An try-catch guarded #on function, to prevent poisoning the global
+  // `_listening` variable.
+  var tryCatchOn = function(obj, name, callback, context) {
+    try {
+      obj.on(name, callback, context);
+    } catch (e) {
+      return e;
+    }
+  };
+
+  // Remove one or many callbacks. If `context` is null, removes all
+  // callbacks with that function. If `callback` is null, removes all
+  // callbacks for the event. If `name` is null, removes all bound
+  // callbacks for all events.
+  Events.off = function(name, callback, context) {
+    if (!this._events) return this;
+    this._events = eventsApi(offApi, this._events, name, callback, {
+      context: context,
+      listeners: this._listeners
+    });
+
+    return this;
+  };
+
+  // Tell this object to stop listening to either specific events ... or
+  // to every object it's currently listening to.
+  Events.stopListening = function(obj, name, callback) {
+    var listeningTo = this._listeningTo;
+    if (!listeningTo) return this;
+
+    var ids = obj ? [obj._listenId] : _.keys(listeningTo);
+    for (var i = 0; i < ids.length; i++) {
+      var listening = listeningTo[ids[i]];
+
+      // If listening doesn't exist, this object is not currently
+      // listening to obj. Break out early.
+      if (!listening) break;
+
+      listening.obj.off(name, callback, this);
+      if (listening.interop) listening.off(name, callback);
+    }
+    if (_.isEmpty(listeningTo)) this._listeningTo = void 0;
+
+    return this;
+  };
+
+  // The reducing API that removes a callback from the `events` object.
+  var offApi = function(events, name, callback, options) {
+    if (!events) return;
+
+    var context = options.context, listeners = options.listeners;
+    var i = 0, names;
+
+    // Delete all event listeners and "drop" events.
+    if (!name && !context && !callback) {
+      for (names = _.keys(listeners); i < names.length; i++) {
+        listeners[names[i]].cleanup();
+      }
+      return;
+    }
+
+    names = name ? [name] : _.keys(events);
+    for (; i < names.length; i++) {
+      name = names[i];
+      var handlers = events[name];
+
+      // Bail out if there are no events stored.
+      if (!handlers) break;
+
+      // Find any remaining events.
+      var remaining = [];
+      for (var j = 0; j < handlers.length; j++) {
+        var handler = handlers[j];
+        if (
+          callback && callback !== handler.callback &&
+            callback !== handler.callback._callback ||
+              context && context !== handler.context
+        ) {
+          remaining.push(handler);
+        } else {
+          var listening = handler.listening;
+          if (listening) listening.off(name, callback);
+        }
+      }
+
+      // Replace events if there are any remaining.  Otherwise, clean up.
+      if (remaining.length) {
+        events[name] = remaining;
+      } else {
+        delete events[name];
+      }
+    }
+
+    return events;
+  };
+
+  // Bind an event to only be triggered a single time. After the first time
+  // the callback is invoked, its listener will be removed. If multiple events
+  // are passed in using the space-separated syntax, the handler will fire
+  // once for each event, not once for a combination of all events.
+  Events.once = function(name, callback, context) {
+    // Map the event into a `{event: once}` object.
+    var events = eventsApi(onceMap, {}, name, callback, this.off.bind(this));
+    if (typeof name === 'string' && context == null) callback = void 0;
+    return this.on(events, callback, context);
+  };
+
+  // Inversion-of-control versions of `once`.
+  Events.listenToOnce = function(obj, name, callback) {
+    // Map the event into a `{event: once}` object.
+    var events = eventsApi(onceMap, {}, name, callback, this.stopListening.bind(this, obj));
+    return this.listenTo(obj, events);
+  };
+
+  // Reduces the event callbacks into a map of `{event: onceWrapper}`.
+  // `offer` unbinds the `onceWrapper` after it has been called.
+  var onceMap = function(map, name, callback, offer) {
+    if (callback) {
+      var once = map[name] = _.once(function() {
+        offer(name, once);
+        callback.apply(this, arguments);
+      });
+      once._callback = callback;
+    }
+    return map;
+  };
+
+  // Trigger one or many events, firing all bound callbacks. Callbacks are
+  // passed the same arguments as `trigger` is, apart from the event name
+  // (unless you're listening on `"all"`, which will cause your callback to
+  // receive the true name of the event as the first argument).
+  Events.trigger = function(name) {
+    if (!this._events) return this;
+
+    var length = Math.max(0, arguments.length - 1);
+    var args = Array(length);
+    for (var i = 0; i < length; i++) args[i] = arguments[i + 1];
+
+    eventsApi(triggerApi, this._events, name, void 0, args);
+    return this;
+  };
+
+  // Handles triggering the appropriate event callbacks.
+  var triggerApi = function(objEvents, name, callback, args) {
+    if (objEvents) {
+      var events = objEvents[name];
+      var allEvents = objEvents.all;
+      if (events && allEvents) allEvents = allEvents.slice();
+      if (events) triggerEvents(events, args);
+      if (allEvents) triggerEvents(allEvents, [name].concat(args));
+    }
+    return objEvents;
+  };
+
+  // A difficult-to-believe, but optimized internal dispatch function for
+  // triggering events. Tries to keep the usual cases speedy (most internal
+  // Backbone events have 3 arguments).
+  var triggerEvents = function(events, args) {
+    var ev, i = -1, l = events.length, a1 = args[0], a2 = args[1], a3 = args[2];
+    switch (args.length) {
+      case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return;
+      case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return;
+      case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return;
+      case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return;
+      default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args); return;
+    }
+  };
+
+  // A listening class that tracks and cleans up memory bindings
+  // when all callbacks have been offed.
+  var Listening = function(listener, obj) {
+    this.id = listener._listenId;
+    this.listener = listener;
+    this.obj = obj;
+    this.interop = true;
+    this.count = 0;
+    this._events = void 0;
+  };
+
+  Listening.prototype.on = Events.on;
+
+  // Offs a callback (or several).
+  // Uses an optimized counter if the listenee uses Backbone.Events.
+  // Otherwise, falls back to manual tracking to support events
+  // library interop.
+  Listening.prototype.off = function(name, callback) {
+    var cleanup;
+    if (this.interop) {
+      this._events = eventsApi(offApi, this._events, name, callback, {
+        context: void 0,
+        listeners: void 0
+      });
+      cleanup = !this._events;
+    } else {
+      this.count--;
+      cleanup = this.count === 0;
+    }
+    if (cleanup) this.cleanup();
+  };
+
+  // Cleans up memory bindings between the listener and the listenee.
+  Listening.prototype.cleanup = function() {
+    delete this.listener._listeningTo[this.obj._listenId];
+    if (!this.interop) delete this.obj._listeners[this.id];
+  };
+
+  // Aliases for backwards compatibility.
+  Events.bind   = Events.on;
+  Events.unbind = Events.off;
+
+  // Allow the `Backbone` object to serve as a global event bus, for folks who
+  // want global "pubsub" in a convenient place.
+  _.extend(Backbone, Events);
+
+  // Backbone.Model
+  // --------------
+
+  // Backbone **Models** are the basic data object in the framework --
+  // frequently representing a row in a table in a database on your server.
+  // A discrete chunk of data and a bunch of useful, related methods for
+  // performing computations and transformations on that data.
+
+  // Create a new model with the specified attributes. A client id (`cid`)
+  // is automatically generated and assigned for you.
+  var Model = Backbone.Model = function(attributes, options) {
+    var attrs = attributes || {};
+    options || (options = {});
+    this.preinitialize.apply(this, arguments);
+    this.cid = _.uniqueId(this.cidPrefix);
+    this.attributes = {};
+    if (options.collection) this.collection = options.collection;
+    if (options.parse) attrs = this.parse(attrs, options) || {};
+    var defaults = _.result(this, 'defaults');
+    attrs = _.defaults(_.extend({}, defaults, attrs), defaults);
+    this.set(attrs, options);
+    this.changed = {};
+    this.initialize.apply(this, arguments);
+  };
+
+  // Attach all inheritable methods to the Model prototype.
+  _.extend(Model.prototype, Events, {
+
+    // A hash of attributes whose current and previous value differ.
+    changed: null,
+
+    // The value returned during the last failed validation.
+    validationError: null,
+
+    // The default name for the JSON `id` attribute is `"id"`. MongoDB and
+    // CouchDB users may want to set this to `"_id"`.
+    idAttribute: 'id',
+
+    // The prefix is used to create the client id which is used to identify models locally.
+    // You may want to override this if you're experiencing name clashes with model ids.
+    cidPrefix: 'c',
+
+    // preinitialize is an empty function by default. You can override it with a function
+    // or object.  preinitialize will run before any instantiation logic is run in the Model.
+    preinitialize: function(){},
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Return a copy of the model's `attributes` object.
+    toJSON: function(options) {
+      return _.clone(this.attributes);
+    },
+
+    // Proxy `Backbone.sync` by default -- but override this if you need
+    // custom syncing semantics for *this* particular model.
+    sync: function() {
+      return Backbone.sync.apply(this, arguments);
+    },
+
+    // Get the value of an attribute.
+    get: function(attr) {
+      return this.attributes[attr];
+    },
+
+    // Get the HTML-escaped value of an attribute.
+    escape: function(attr) {
+      return _.escape(this.get(attr));
+    },
+
+    // Returns `true` if the attribute contains a value that is not null
+    // or undefined.
+    has: function(attr) {
+      return this.get(attr) != null;
+    },
+
+    // Special-cased proxy to underscore's `_.matches` method.
+    matches: function(attrs) {
+      return !!_.iteratee(attrs, this)(this.attributes);
+    },
+
+    // Set a hash of model attributes on the object, firing `"change"`. This is
+    // the core primitive operation of a model, updating the data and notifying
+    // anyone who needs to know about the change in state. The heart of the beast.
+    set: function(key, val, options) {
+      if (key == null) return this;
+
+      // Handle both `"key", value` and `{key: value}` -style arguments.
+      var attrs;
+      if (typeof key === 'object') {
+        attrs = key;
+        options = val;
+      } else {
+        (attrs = {})[key] = val;
+      }
+
+      options || (options = {});
+
+      // Run validation.
+      if (!this._validate(attrs, options)) return false;
+
+      // Extract attributes and options.
+      var unset      = options.unset;
+      var silent     = options.silent;
+      var changes    = [];
+      var changing   = this._changing;
+      this._changing = true;
+
+      if (!changing) {
+        this._previousAttributes = _.clone(this.attributes);
+        this.changed = {};
+      }
+
+      var current = this.attributes;
+      var changed = this.changed;
+      var prev    = this._previousAttributes;
+
+      // For each `set` attribute, update or delete the current value.
+      for (var attr in attrs) {
+        val = attrs[attr];
+        if (!_.isEqual(current[attr], val)) changes.push(attr);
+        if (!_.isEqual(prev[attr], val)) {
+          changed[attr] = val;
+        } else {
+          delete changed[attr];
+        }
+        unset ? delete current[attr] : current[attr] = val;
+      }
+
+      // Update the `id`.
+      if (this.idAttribute in attrs) this.id = this.get(this.idAttribute);
+
+      // Trigger all relevant attribute changes.
+      if (!silent) {
+        if (changes.length) this._pending = options;
+        for (var i = 0; i < changes.length; i++) {
+          this.trigger('change:' + changes[i], this, current[changes[i]], options);
+        }
+      }
+
+      // You might be wondering why there's a `while` loop here. Changes can
+      // be recursively nested within `"change"` events.
+      if (changing) return this;
+      if (!silent) {
+        while (this._pending) {
+          options = this._pending;
+          this._pending = false;
+          this.trigger('change', this, options);
+        }
+      }
+      this._pending = false;
+      this._changing = false;
+      return this;
+    },
+
+    // Remove an attribute from the model, firing `"change"`. `unset` is a noop
+    // if the attribute doesn't exist.
+    unset: function(attr, options) {
+      return this.set(attr, void 0, _.extend({}, options, {unset: true}));
+    },
+
+    // Clear all attributes on the model, firing `"change"`.
+    clear: function(options) {
+      var attrs = {};
+      for (var key in this.attributes) attrs[key] = void 0;
+      return this.set(attrs, _.extend({}, options, {unset: true}));
+    },
+
+    // Determine if the model has changed since the last `"change"` event.
+    // If you specify an attribute name, determine if that attribute has changed.
+    hasChanged: function(attr) {
+      if (attr == null) return !_.isEmpty(this.changed);
+      return _.has(this.changed, attr);
+    },
+
+    // Return an object containing all the attributes that have changed, or
+    // false if there are no changed attributes. Useful for determining what
+    // parts of a view need to be updated and/or what attributes need to be
+    // persisted to the server. Unset attributes will be set to undefined.
+    // You can also pass an attributes object to diff against the model,
+    // determining if there *would be* a change.
+    changedAttributes: function(diff) {
+      if (!diff) return this.hasChanged() ? _.clone(this.changed) : false;
+      var old = this._changing ? this._previousAttributes : this.attributes;
+      var changed = {};
+      var hasChanged;
+      for (var attr in diff) {
+        var val = diff[attr];
+        if (_.isEqual(old[attr], val)) continue;
+        changed[attr] = val;
+        hasChanged = true;
+      }
+      return hasChanged ? changed : false;
+    },
+
+    // Get the previous value of an attribute, recorded at the time the last
+    // `"change"` event was fired.
+    previous: function(attr) {
+      if (attr == null || !this._previousAttributes) return null;
+      return this._previousAttributes[attr];
+    },
+
+    // Get all of the attributes of the model at the time of the previous
+    // `"change"` event.
+    previousAttributes: function() {
+      return _.clone(this._previousAttributes);
+    },
+
+    // Fetch the model from the server, merging the response with the model's
+    // local attributes. Any changed attributes will trigger a "change" event.
+    fetch: function(options) {
+      options = _.extend({parse: true}, options);
+      var model = this;
+      var success = options.success;
+      options.success = function(resp) {
+        var serverAttrs = options.parse ? model.parse(resp, options) : resp;
+        if (!model.set(serverAttrs, options)) return false;
+        if (success) success.call(options.context, model, resp, options);
+        model.trigger('sync', model, resp, options);
+      };
+      wrapError(this, options);
+      return this.sync('read', this, options);
+    },
+
+    // Set a hash of model attributes, and sync the model to the server.
+    // If the server returns an attributes hash that differs, the model's
+    // state will be `set` again.
+    save: function(key, val, options) {
+      // Handle both `"key", value` and `{key: value}` -style arguments.
+      var attrs;
+      if (key == null || typeof key === 'object') {
+        attrs = key;
+        options = val;
+      } else {
+        (attrs = {})[key] = val;
+      }
+
+      options = _.extend({validate: true, parse: true}, options);
+      var wait = options.wait;
+
+      // If we're not waiting and attributes exist, save acts as
+      // `set(attr).save(null, opts)` with validation. Otherwise, check if
+      // the model will be valid when the attributes, if any, are set.
+      if (attrs && !wait) {
+        if (!this.set(attrs, options)) return false;
+      } else if (!this._validate(attrs, options)) {
+        return false;
+      }
+
+      // After a successful server-side save, the client is (optionally)
+      // updated with the server-side state.
+      var model = this;
+      var success = options.success;
+      var attributes = this.attributes;
+      options.success = function(resp) {
+        // Ensure attributes are restored during synchronous saves.
+        model.attributes = attributes;
+        var serverAttrs = options.parse ? model.parse(resp, options) : resp;
+        if (wait) serverAttrs = _.extend({}, attrs, serverAttrs);
+        if (serverAttrs && !model.set(serverAttrs, options)) return false;
+        if (success) success.call(options.context, model, resp, options);
+        model.trigger('sync', model, resp, options);
+      };
+      wrapError(this, options);
+
+      // Set temporary attributes if `{wait: true}` to properly find new ids.
+      if (attrs && wait) this.attributes = _.extend({}, attributes, attrs);
+
+      var method = this.isNew() ? 'create' : options.patch ? 'patch' : 'update';
+      if (method === 'patch' && !options.attrs) options.attrs = attrs;
+      var xhr = this.sync(method, this, options);
+
+      // Restore attributes.
+      this.attributes = attributes;
+
+      return xhr;
+    },
+
+    // Destroy this model on the server if it was already persisted.
+    // Optimistically removes the model from its collection, if it has one.
+    // If `wait: true` is passed, waits for the server to respond before removal.
+    destroy: function(options) {
+      options = options ? _.clone(options) : {};
+      var model = this;
+      var success = options.success;
+      var wait = options.wait;
+
+      var destroy = function() {
+        model.stopListening();
+        model.trigger('destroy', model, model.collection, options);
+      };
+
+      options.success = function(resp) {
+        if (wait) destroy();
+        if (success) success.call(options.context, model, resp, options);
+        if (!model.isNew()) model.trigger('sync', model, resp, options);
+      };
+
+      var xhr = false;
+      if (this.isNew()) {
+        _.defer(options.success);
+      } else {
+        wrapError(this, options);
+        xhr = this.sync('delete', this, options);
+      }
+      if (!wait) destroy();
+      return xhr;
+    },
+
+    // Default URL for the model's representation on the server -- if you're
+    // using Backbone's restful methods, override this to change the endpoint
+    // that will be called.
+    url: function() {
+      var base =
+        _.result(this, 'urlRoot') ||
+        _.result(this.collection, 'url') ||
+        urlError();
+      if (this.isNew()) return base;
+      var id = this.get(this.idAttribute);
+      return base.replace(/[^\/]$/, '$&/') + encodeURIComponent(id);
+    },
+
+    // **parse** converts a response into the hash of attributes to be `set` on
+    // the model. The default implementation is just to pass the response along.
+    parse: function(resp, options) {
+      return resp;
+    },
+
+    // Create a new model with identical attributes to this one.
+    clone: function() {
+      return new this.constructor(this.attributes);
+    },
+
+    // A model is new if it has never been saved to the server, and lacks an id.
+    isNew: function() {
+      return !this.has(this.idAttribute);
+    },
+
+    // Check if the model is currently in a valid state.
+    isValid: function(options) {
+      return this._validate({}, _.extend({}, options, {validate: true}));
+    },
+
+    // Run validation against the next complete set of model attributes,
+    // returning `true` if all is well. Otherwise, fire an `"invalid"` event.
+    _validate: function(attrs, options) {
+      if (!options.validate || !this.validate) return true;
+      attrs = _.extend({}, this.attributes, attrs);
+      var error = this.validationError = this.validate(attrs, options) || null;
+      if (!error) return true;
+      this.trigger('invalid', this, error, _.extend(options, {validationError: error}));
+      return false;
+    }
+
+  });
+
+  // Backbone.Collection
+  // -------------------
+
+  // If models tend to represent a single row of data, a Backbone Collection is
+  // more analogous to a table full of data ... or a small slice or page of that
+  // table, or a collection of rows that belong together for a particular reason
+  // -- all of the messages in this particular folder, all of the documents
+  // belonging to this particular author, and so on. Collections maintain
+  // indexes of their models, both in order, and for lookup by `id`.
+
+  // Create a new **Collection**, perhaps to contain a specific type of `model`.
+  // If a `comparator` is specified, the Collection will maintain
+  // its models in sort order, as they're added and removed.
+  var Collection = Backbone.Collection = function(models, options) {
+    options || (options = {});
+    this.preinitialize.apply(this, arguments);
+    if (options.model) this.model = options.model;
+    if (options.comparator !== void 0) this.comparator = options.comparator;
+    this._reset();
+    this.initialize.apply(this, arguments);
+    if (models) this.reset(models, _.extend({silent: true}, options));
+  };
+
+  // Default options for `Collection#set`.
+  var setOptions = {add: true, remove: true, merge: true};
+  var addOptions = {add: true, remove: false};
+
+  // Splices `insert` into `array` at index `at`.
+  var splice = function(array, insert, at) {
+    at = Math.min(Math.max(at, 0), array.length);
+    var tail = Array(array.length - at);
+    var length = insert.length;
+    var i;
+    for (i = 0; i < tail.length; i++) tail[i] = array[i + at];
+    for (i = 0; i < length; i++) array[i + at] = insert[i];
+    for (i = 0; i < tail.length; i++) array[i + length + at] = tail[i];
+  };
+
+  // Define the Collection's inheritable methods.
+  _.extend(Collection.prototype, Events, {
+
+    // The default model for a collection is just a **Backbone.Model**.
+    // This should be overridden in most cases.
+    model: Model,
+
+
+    // preinitialize is an empty function by default. You can override it with a function
+    // or object.  preinitialize will run before any instantiation logic is run in the Collection.
+    preinitialize: function(){},
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // The JSON representation of a Collection is an array of the
+    // models' attributes.
+    toJSON: function(options) {
+      return this.map(function(model) { return model.toJSON(options); });
+    },
+
+    // Proxy `Backbone.sync` by default.
+    sync: function() {
+      return Backbone.sync.apply(this, arguments);
+    },
+
+    // Add a model, or list of models to the set. `models` may be Backbone
+    // Models or raw JavaScript objects to be converted to Models, or any
+    // combination of the two.
+    add: function(models, options) {
+      return this.set(models, _.extend({merge: false}, options, addOptions));
+    },
+
+    // Remove a model, or a list of models from the set.
+    remove: function(models, options) {
+      options = _.extend({}, options);
+      var singular = !_.isArray(models);
+      models = singular ? [models] : models.slice();
+      var removed = this._removeModels(models, options);
+      if (!options.silent && removed.length) {
+        options.changes = {added: [], merged: [], removed: removed};
+        this.trigger('update', this, options);
+      }
+      return singular ? removed[0] : removed;
+    },
+
+    // Update a collection by `set`-ing a new list of models, adding new ones,
+    // removing models that are no longer present, and merging models that
+    // already exist in the collection, as necessary. Similar to **Model#set**,
+    // the core operation for updating the data contained by the collection.
+    set: function(models, options) {
+      if (models == null) return;
+
+      options = _.extend({}, setOptions, options);
+      if (options.parse && !this._isModel(models)) {
+        models = this.parse(models, options) || [];
+      }
+
+      var singular = !_.isArray(models);
+      models = singular ? [models] : models.slice();
+
+      var at = options.at;
+      if (at != null) at = +at;
+      if (at > this.length) at = this.length;
+      if (at < 0) at += this.length + 1;
+
+      var set = [];
+      var toAdd = [];
+      var toMerge = [];
+      var toRemove = [];
+      var modelMap = {};
+
+      var add = options.add;
+      var merge = options.merge;
+      var remove = options.remove;
+
+      var sort = false;
+      var sortable = this.comparator && at == null && options.sort !== false;
+      var sortAttr = _.isString(this.comparator) ? this.comparator : null;
+
+      // Turn bare objects into model references, and prevent invalid models
+      // from being added.
+      var model, i;
+      for (i = 0; i < models.length; i++) {
+        model = models[i];
+
+        // If a duplicate is found, prevent it from being added and
+        // optionally merge it into the existing model.
+        var existing = this.get(model);
+        if (existing) {
+          if (merge && model !== existing) {
+            var attrs = this._isModel(model) ? model.attributes : model;
+            if (options.parse) attrs = existing.parse(attrs, options);
+            existing.set(attrs, options);
+            toMerge.push(existing);
+            if (sortable && !sort) sort = existing.hasChanged(sortAttr);
+          }
+          if (!modelMap[existing.cid]) {
+            modelMap[existing.cid] = true;
+            set.push(existing);
+          }
+          models[i] = existing;
+
+        // If this is a new, valid model, push it to the `toAdd` list.
+        } else if (add) {
+          model = models[i] = this._prepareModel(model, options);
+          if (model) {
+            toAdd.push(model);
+            this._addReference(model, options);
+            modelMap[model.cid] = true;
+            set.push(model);
+          }
+        }
+      }
+
+      // Remove stale models.
+      if (remove) {
+        for (i = 0; i < this.length; i++) {
+          model = this.models[i];
+          if (!modelMap[model.cid]) toRemove.push(model);
+        }
+        if (toRemove.length) this._removeModels(toRemove, options);
+      }
+
+      // See if sorting is needed, update `length` and splice in new models.
+      var orderChanged = false;
+      var replace = !sortable && add && remove;
+      if (set.length && replace) {
+        orderChanged = this.length !== set.length || _.some(this.models, function(m, index) {
+          return m !== set[index];
+        });
+        this.models.length = 0;
+        splice(this.models, set, 0);
+        this.length = this.models.length;
+      } else if (toAdd.length) {
+        if (sortable) sort = true;
+        splice(this.models, toAdd, at == null ? this.length : at);
+        this.length = this.models.length;
+      }
+
+      // Silently sort the collection if appropriate.
+      if (sort) this.sort({silent: true});
+
+      // Unless silenced, it's time to fire all appropriate add/sort/update events.
+      if (!options.silent) {
+        for (i = 0; i < toAdd.length; i++) {
+          if (at != null) options.index = at + i;
+          model = toAdd[i];
+          model.trigger('add', model, this, options);
+        }
+        if (sort || orderChanged) this.trigger('sort', this, options);
+        if (toAdd.length || toRemove.length || toMerge.length) {
+          options.changes = {
+            added: toAdd,
+            removed: toRemove,
+            merged: toMerge
+          };
+          this.trigger('update', this, options);
+        }
+      }
+
+      // Return the added (or merged) model (or models).
+      return singular ? models[0] : models;
+    },
+
+    // When you have more items than you want to add or remove individually,
+    // you can reset the entire set with a new list of models, without firing
+    // any granular `add` or `remove` events. Fires `reset` when finished.
+    // Useful for bulk operations and optimizations.
+    reset: function(models, options) {
+      options = options ? _.clone(options) : {};
+      for (var i = 0; i < this.models.length; i++) {
+        this._removeReference(this.models[i], options);
+      }
+      options.previousModels = this.models;
+      this._reset();
+      models = this.add(models, _.extend({silent: true}, options));
+      if (!options.silent) this.trigger('reset', this, options);
+      return models;
+    },
+
+    // Add a model to the end of the collection.
+    push: function(model, options) {
+      return this.add(model, _.extend({at: this.length}, options));
+    },
+
+    // Remove a model from the end of the collection.
+    pop: function(options) {
+      var model = this.at(this.length - 1);
+      return this.remove(model, options);
+    },
+
+    // Add a model to the beginning of the collection.
+    unshift: function(model, options) {
+      return this.add(model, _.extend({at: 0}, options));
+    },
+
+    // Remove a model from the beginning of the collection.
+    shift: function(options) {
+      var model = this.at(0);
+      return this.remove(model, options);
+    },
+
+    // Slice out a sub-array of models from the collection.
+    slice: function() {
+      return slice.apply(this.models, arguments);
+    },
+
+    // Get a model from the set by id, cid, model object with id or cid
+    // properties, or an attributes object that is transformed through modelId.
+    get: function(obj) {
+      if (obj == null) return void 0;
+      return this._byId[obj] ||
+        this._byId[this.modelId(this._isModel(obj) ? obj.attributes : obj)] ||
+        obj.cid && this._byId[obj.cid];
+    },
+
+    // Returns `true` if the model is in the collection.
+    has: function(obj) {
+      return this.get(obj) != null;
+    },
+
+    // Get the model at the given index.
+    at: function(index) {
+      if (index < 0) index += this.length;
+      return this.models[index];
+    },
+
+    // Return models with matching attributes. Useful for simple cases of
+    // `filter`.
+    where: function(attrs, first) {
+      return this[first ? 'find' : 'filter'](attrs);
+    },
+
+    // Return the first model with matching attributes. Useful for simple cases
+    // of `find`.
+    findWhere: function(attrs) {
+      return this.where(attrs, true);
+    },
+
+    // Force the collection to re-sort itself. You don't need to call this under
+    // normal circumstances, as the set will maintain sort order as each item
+    // is added.
+    sort: function(options) {
+      var comparator = this.comparator;
+      if (!comparator) throw new Error('Cannot sort a set without a comparator');
+      options || (options = {});
+
+      var length = comparator.length;
+      if (_.isFunction(comparator)) comparator = comparator.bind(this);
+
+      // Run sort based on type of `comparator`.
+      if (length === 1 || _.isString(comparator)) {
+        this.models = this.sortBy(comparator);
+      } else {
+        this.models.sort(comparator);
+      }
+      if (!options.silent) this.trigger('sort', this, options);
+      return this;
+    },
+
+    // Pluck an attribute from each model in the collection.
+    pluck: function(attr) {
+      return this.map(attr + '');
+    },
+
+    // Fetch the default set of models for this collection, resetting the
+    // collection when they arrive. If `reset: true` is passed, the response
+    // data will be passed through the `reset` method instead of `set`.
+    fetch: function(options) {
+      options = _.extend({parse: true}, options);
+      var success = options.success;
+      var collection = this;
+      options.success = function(resp) {
+        var method = options.reset ? 'reset' : 'set';
+        collection[method](resp, options);
+        if (success) success.call(options.context, collection, resp, options);
+        collection.trigger('sync', collection, resp, options);
+      };
+      wrapError(this, options);
+      return this.sync('read', this, options);
+    },
+
+    // Create a new instance of a model in this collection. Add the model to the
+    // collection immediately, unless `wait: true` is passed, in which case we
+    // wait for the server to agree.
+    create: function(model, options) {
+      options = options ? _.clone(options) : {};
+      var wait = options.wait;
+      model = this._prepareModel(model, options);
+      if (!model) return false;
+      if (!wait) this.add(model, options);
+      var collection = this;
+      var success = options.success;
+      options.success = function(m, resp, callbackOpts) {
+        if (wait) collection.add(m, callbackOpts);
+        if (success) success.call(callbackOpts.context, m, resp, callbackOpts);
+      };
+      model.save(null, options);
+      return model;
+    },
+
+    // **parse** converts a response into a list of models to be added to the
+    // collection. The default implementation is just to pass it through.
+    parse: function(resp, options) {
+      return resp;
+    },
+
+    // Create a new collection with an identical list of models as this one.
+    clone: function() {
+      return new this.constructor(this.models, {
+        model: this.model,
+        comparator: this.comparator
+      });
+    },
+
+    // Define how to uniquely identify models in the collection.
+    modelId: function(attrs) {
+      return attrs[this.model.prototype.idAttribute || 'id'];
+    },
+
+    // Get an iterator of all models in this collection.
+    values: function() {
+      return new CollectionIterator(this, ITERATOR_VALUES);
+    },
+
+    // Get an iterator of all model IDs in this collection.
+    keys: function() {
+      return new CollectionIterator(this, ITERATOR_KEYS);
+    },
+
+    // Get an iterator of all [ID, model] tuples in this collection.
+    entries: function() {
+      return new CollectionIterator(this, ITERATOR_KEYSVALUES);
+    },
+
+    // Private method to reset all internal state. Called when the collection
+    // is first initialized or reset.
+    _reset: function() {
+      this.length = 0;
+      this.models = [];
+      this._byId  = {};
+    },
+
+    // Prepare a hash of attributes (or other model) to be added to this
+    // collection.
+    _prepareModel: function(attrs, options) {
+      if (this._isModel(attrs)) {
+        if (!attrs.collection) attrs.collection = this;
+        return attrs;
+      }
+      options = options ? _.clone(options) : {};
+      options.collection = this;
+      var model = new this.model(attrs, options);
+      if (!model.validationError) return model;
+      this.trigger('invalid', this, model.validationError, options);
+      return false;
+    },
+
+    // Internal method called by both remove and set.
+    _removeModels: function(models, options) {
+      var removed = [];
+      for (var i = 0; i < models.length; i++) {
+        var model = this.get(models[i]);
+        if (!model) continue;
+
+        var index = this.indexOf(model);
+        this.models.splice(index, 1);
+        this.length--;
+
+        // Remove references before triggering 'remove' event to prevent an
+        // infinite loop. #3693
+        delete this._byId[model.cid];
+        var id = this.modelId(model.attributes);
+        if (id != null) delete this._byId[id];
+
+        if (!options.silent) {
+          options.index = index;
+          model.trigger('remove', model, this, options);
+        }
+
+        removed.push(model);
+        this._removeReference(model, options);
+      }
+      return removed;
+    },
+
+    // Method for checking whether an object should be considered a model for
+    // the purposes of adding to the collection.
+    _isModel: function(model) {
+      return model instanceof Model;
+    },
+
+    // Internal method to create a model's ties to a collection.
+    _addReference: function(model, options) {
+      this._byId[model.cid] = model;
+      var id = this.modelId(model.attributes);
+      if (id != null) this._byId[id] = model;
+      model.on('all', this._onModelEvent, this);
+    },
+
+    // Internal method to sever a model's ties to a collection.
+    _removeReference: function(model, options) {
+      delete this._byId[model.cid];
+      var id = this.modelId(model.attributes);
+      if (id != null) delete this._byId[id];
+      if (this === model.collection) delete model.collection;
+      model.off('all', this._onModelEvent, this);
+    },
+
+    // Internal method called every time a model in the set fires an event.
+    // Sets need to update their indexes when models change ids. All other
+    // events simply proxy through. "add" and "remove" events that originate
+    // in other collections are ignored.
+    _onModelEvent: function(event, model, collection, options) {
+      if (model) {
+        if ((event === 'add' || event === 'remove') && collection !== this) return;
+        if (event === 'destroy') this.remove(model, options);
+        if (event === 'change') {
+          var prevId = this.modelId(model.previousAttributes());
+          var id = this.modelId(model.attributes);
+          if (prevId !== id) {
+            if (prevId != null) delete this._byId[prevId];
+            if (id != null) this._byId[id] = model;
+          }
+        }
+      }
+      this.trigger.apply(this, arguments);
+    }
+
+  });
+
+  // Defining an @@iterator method implements JavaScript's Iterable protocol.
+  // In modern ES2015 browsers, this value is found at Symbol.iterator.
+  /* global Symbol */
+  var $$iterator = typeof Symbol === 'function' && Symbol.iterator;
+  if ($$iterator) {
+    Collection.prototype[$$iterator] = Collection.prototype.values;
+  }
+
+  // CollectionIterator
+  // ------------------
+
+  // A CollectionIterator implements JavaScript's Iterator protocol, allowing the
+  // use of `for of` loops in modern browsers and interoperation between
+  // Backbone.Collection and other JavaScript functions and third-party libraries
+  // which can operate on Iterables.
+  var CollectionIterator = function(collection, kind) {
+    this._collection = collection;
+    this._kind = kind;
+    this._index = 0;
+  };
+
+  // This "enum" defines the three possible kinds of values which can be emitted
+  // by a CollectionIterator that correspond to the values(), keys() and entries()
+  // methods on Collection, respectively.
+  var ITERATOR_VALUES = 1;
+  var ITERATOR_KEYS = 2;
+  var ITERATOR_KEYSVALUES = 3;
+
+  // All Iterators should themselves be Iterable.
+  if ($$iterator) {
+    CollectionIterator.prototype[$$iterator] = function() {
+      return this;
+    };
+  }
+
+  CollectionIterator.prototype.next = function() {
+    if (this._collection) {
+
+      // Only continue iterating if the iterated collection is long enough.
+      if (this._index < this._collection.length) {
+        var model = this._collection.at(this._index);
+        this._index++;
+
+        // Construct a value depending on what kind of values should be iterated.
+        var value;
+        if (this._kind === ITERATOR_VALUES) {
+          value = model;
+        } else {
+          var id = this._collection.modelId(model.attributes);
+          if (this._kind === ITERATOR_KEYS) {
+            value = id;
+          } else { // ITERATOR_KEYSVALUES
+            value = [id, model];
+          }
+        }
+        return {value: value, done: false};
+      }
+
+      // Once exhausted, remove the reference to the collection so future
+      // calls to the next method always return done.
+      this._collection = void 0;
+    }
+
+    return {value: void 0, done: true};
+  };
+
+  // Backbone.View
+  // -------------
+
+  // Backbone Views are almost more convention than they are actual code. A View
+  // is simply a JavaScript object that represents a logical chunk of UI in the
+  // DOM. This might be a single item, an entire list, a sidebar or panel, or
+  // even the surrounding frame which wraps your whole app. Defining a chunk of
+  // UI as a **View** allows you to define your DOM events declaratively, without
+  // having to worry about render order ... and makes it easy for the view to
+  // react to specific changes in the state of your models.
+
+  // Creating a Backbone.View creates its initial element outside of the DOM,
+  // if an existing element is not provided...
+  var View = Backbone.View = function(options) {
+    this.cid = _.uniqueId('view');
+    this.preinitialize.apply(this, arguments);
+    _.extend(this, _.pick(options, viewOptions));
+    this._ensureElement();
+    this.initialize.apply(this, arguments);
+  };
+
+  // Cached regex to split keys for `delegate`.
+  var delegateEventSplitter = /^(\S+)\s*(.*)$/;
+
+  // List of view options to be set as properties.
+  var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName', 'events'];
+
+  // Set up all inheritable **Backbone.View** properties and methods.
+  _.extend(View.prototype, Events, {
+
+    // The default `tagName` of a View's element is `"div"`.
+    tagName: 'div',
+
+    // jQuery delegate for element lookup, scoped to DOM elements within the
+    // current view. This should be preferred to global lookups where possible.
+    $: function(selector) {
+      return this.$el.find(selector);
+    },
+
+    // preinitialize is an empty function by default. You can override it with a function
+    // or object.  preinitialize will run before any instantiation logic is run in the View
+    preinitialize: function(){},
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // **render** is the core function that your view should override, in order
+    // to populate its element (`this.el`), with the appropriate HTML. The
+    // convention is for **render** to always return `this`.
+    render: function() {
+      return this;
+    },
+
+    // Remove this view by taking the element out of the DOM, and removing any
+    // applicable Backbone.Events listeners.
+    remove: function() {
+      this._removeElement();
+      this.stopListening();
+      return this;
+    },
+
+    // Remove this view's element from the document and all event listeners
+    // attached to it. Exposed for subclasses using an alternative DOM
+    // manipulation API.
+    _removeElement: function() {
+      this.$el.remove();
+    },
+
+    // Change the view's element (`this.el` property) and re-delegate the
+    // view's events on the new element.
+    setElement: function(element) {
+      this.undelegateEvents();
+      this._setElement(element);
+      this.delegateEvents();
+      return this;
+    },
+
+    // Creates the `this.el` and `this.$el` references for this view using the
+    // given `el`. `el` can be a CSS selector or an HTML string, a jQuery
+    // context or an element. Subclasses can override this to utilize an
+    // alternative DOM manipulation API and are only required to set the
+    // `this.el` property.
+    _setElement: function(el) {
+      this.$el = el instanceof Backbone.$ ? el : Backbone.$(el);
+      this.el = this.$el[0];
+    },
+
+    // Set callbacks, where `this.events` is a hash of
+    //
+    // *{"event selector": "callback"}*
+    //
+    //     {
+    //       'mousedown .title':  'edit',
+    //       'click .button':     'save',
+    //       'click .open':       function(e) { ... }
+    //     }
+    //
+    // pairs. Callbacks will be bound to the view, with `this` set properly.
+    // Uses event delegation for efficiency.
+    // Omitting the selector binds the event to `this.el`.
+    delegateEvents: function(events) {
+      events || (events = _.result(this, 'events'));
+      if (!events) return this;
+      this.undelegateEvents();
+      for (var key in events) {
+        var method = events[key];
+        if (!_.isFunction(method)) method = this[method];
+        if (!method) continue;
+        var match = key.match(delegateEventSplitter);
+        this.delegate(match[1], match[2], method.bind(this));
+      }
+      return this;
+    },
+
+    // Add a single event listener to the view's element (or a child element
+    // using `selector`). This only works for delegate-able events: not `focus`,
+    // `blur`, and not `change`, `submit`, and `reset` in Internet Explorer.
+    delegate: function(eventName, selector, listener) {
+      this.$el.on(eventName + '.delegateEvents' + this.cid, selector, listener);
+      return this;
+    },
+
+    // Clears all callbacks previously bound to the view by `delegateEvents`.
+    // You usually don't need to use this, but may wish to if you have multiple
+    // Backbone views attached to the same DOM element.
+    undelegateEvents: function() {
+      if (this.$el) this.$el.off('.delegateEvents' + this.cid);
+      return this;
+    },
+
+    // A finer-grained `undelegateEvents` for removing a single delegated event.
+    // `selector` and `listener` are both optional.
+    undelegate: function(eventName, selector, listener) {
+      this.$el.off(eventName + '.delegateEvents' + this.cid, selector, listener);
+      return this;
+    },
+
+    // Produces a DOM element to be assigned to your view. Exposed for
+    // subclasses using an alternative DOM manipulation API.
+    _createElement: function(tagName) {
+      return document.createElement(tagName);
+    },
+
+    // Ensure that the View has a DOM element to render into.
+    // If `this.el` is a string, pass it through `$()`, take the first
+    // matching element, and re-assign it to `el`. Otherwise, create
+    // an element from the `id`, `className` and `tagName` properties.
+    _ensureElement: function() {
+      if (!this.el) {
+        var attrs = _.extend({}, _.result(this, 'attributes'));
+        if (this.id) attrs.id = _.result(this, 'id');
+        if (this.className) attrs['class'] = _.result(this, 'className');
+        this.setElement(this._createElement(_.result(this, 'tagName')));
+        this._setAttributes(attrs);
+      } else {
+        this.setElement(_.result(this, 'el'));
+      }
+    },
+
+    // Set attributes from a hash on this view's element.  Exposed for
+    // subclasses using an alternative DOM manipulation API.
+    _setAttributes: function(attributes) {
+      this.$el.attr(attributes);
+    }
+
+  });
+
+  // Proxy Backbone class methods to Underscore functions, wrapping the model's
+  // `attributes` object or collection's `models` array behind the scenes.
+  //
+  // collection.filter(function(model) { return model.get('age') > 10 });
+  // collection.each(this.addView);
+  //
+  // `Function#apply` can be slow so we use the method's arg count, if we know it.
+  var addMethod = function(base, length, method, attribute) {
+    switch (length) {
+      case 1: return function() {
+        return base[method](this[attribute]);
+      };
+      case 2: return function(value) {
+        return base[method](this[attribute], value);
+      };
+      case 3: return function(iteratee, context) {
+        return base[method](this[attribute], cb(iteratee, this), context);
+      };
+      case 4: return function(iteratee, defaultVal, context) {
+        return base[method](this[attribute], cb(iteratee, this), defaultVal, context);
+      };
+      default: return function() {
+        var args = slice.call(arguments);
+        args.unshift(this[attribute]);
+        return base[method].apply(base, args);
+      };
+    }
+  };
+
+  var addUnderscoreMethods = function(Class, base, methods, attribute) {
+    _.each(methods, function(length, method) {
+      if (base[method]) Class.prototype[method] = addMethod(base, length, method, attribute);
+    });
+  };
+
+  // Support `collection.sortBy('attr')` and `collection.findWhere({id: 1})`.
+  var cb = function(iteratee, instance) {
+    if (_.isFunction(iteratee)) return iteratee;
+    if (_.isObject(iteratee) && !instance._isModel(iteratee)) return modelMatcher(iteratee);
+    if (_.isString(iteratee)) return function(model) { return model.get(iteratee); };
+    return iteratee;
+  };
+  var modelMatcher = function(attrs) {
+    var matcher = _.matches(attrs);
+    return function(model) {
+      return matcher(model.attributes);
+    };
+  };
+
+  // Underscore methods that we want to implement on the Collection.
+  // 90% of the core usefulness of Backbone Collections is actually implemented
+  // right here:
+  var collectionMethods = {forEach: 3, each: 3, map: 3, collect: 3, reduce: 0,
+    foldl: 0, inject: 0, reduceRight: 0, foldr: 0, find: 3, detect: 3, filter: 3,
+    select: 3, reject: 3, every: 3, all: 3, some: 3, any: 3, include: 3, includes: 3,
+    contains: 3, invoke: 0, max: 3, min: 3, toArray: 1, size: 1, first: 3,
+    head: 3, take: 3, initial: 3, rest: 3, tail: 3, drop: 3, last: 3,
+    without: 0, difference: 0, indexOf: 3, shuffle: 1, lastIndexOf: 3,
+    isEmpty: 1, chain: 1, sample: 3, partition: 3, groupBy: 3, countBy: 3,
+    sortBy: 3, indexBy: 3, findIndex: 3, findLastIndex: 3};
+
+
+  // Underscore methods that we want to implement on the Model, mapped to the
+  // number of arguments they take.
+  var modelMethods = {keys: 1, values: 1, pairs: 1, invert: 1, pick: 0,
+    omit: 0, chain: 1, isEmpty: 1};
+
+  // Mix in each Underscore method as a proxy to `Collection#models`.
+
+  _.each([
+    [Collection, collectionMethods, 'models'],
+    [Model, modelMethods, 'attributes']
+  ], function(config) {
+    var Base = config[0],
+        methods = config[1],
+        attribute = config[2];
+
+    Base.mixin = function(obj) {
+      var mappings = _.reduce(_.functions(obj), function(memo, name) {
+        memo[name] = 0;
+        return memo;
+      }, {});
+      addUnderscoreMethods(Base, obj, mappings, attribute);
+    };
+
+    addUnderscoreMethods(Base, _, methods, attribute);
+  });
+
+  // Backbone.sync
+  // -------------
+
+  // Override this function to change the manner in which Backbone persists
+  // models to the server. You will be passed the type of request, and the
+  // model in question. By default, makes a RESTful Ajax request
+  // to the model's `url()`. Some possible customizations could be:
+  //
+  // * Use `setTimeout` to batch rapid-fire updates into a single request.
+  // * Send up the models as XML instead of JSON.
+  // * Persist models via WebSockets instead of Ajax.
+  //
+  // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
+  // as `POST`, with a `_method` parameter containing the true HTTP method,
+  // as well as all requests with the body as `application/x-www-form-urlencoded`
+  // instead of `application/json` with the model in a param named `model`.
+  // Useful when interfacing with server-side languages like **PHP** that make
+  // it difficult to read the body of `PUT` requests.
+  Backbone.sync = function(method, model, options) {
+    var type = methodMap[method];
+
+    // Default options, unless specified.
+    _.defaults(options || (options = {}), {
+      emulateHTTP: Backbone.emulateHTTP,
+      emulateJSON: Backbone.emulateJSON
+    });
+
+    // Default JSON-request options.
+    var params = {type: type, dataType: 'json'};
+
+    // Ensure that we have a URL.
+    if (!options.url) {
+      params.url = _.result(model, 'url') || urlError();
+    }
+
+    // Ensure that we have the appropriate request data.
+    if (options.data == null && model && (method === 'create' || method === 'update' || method === 'patch')) {
+      params.contentType = 'application/json';
+      params.data = JSON.stringify(options.attrs || model.toJSON(options));
+    }
+
+    // For older servers, emulate JSON by encoding the request into an HTML-form.
+    if (options.emulateJSON) {
+      params.contentType = 'application/x-www-form-urlencoded';
+      params.data = params.data ? {model: params.data} : {};
+    }
+
+    // For older servers, emulate HTTP by mimicking the HTTP method with `_method`
+    // And an `X-HTTP-Method-Override` header.
+    if (options.emulateHTTP && (type === 'PUT' || type === 'DELETE' || type === 'PATCH')) {
+      params.type = 'POST';
+      if (options.emulateJSON) params.data._method = type;
+      var beforeSend = options.beforeSend;
+      options.beforeSend = function(xhr) {
+        xhr.setRequestHeader('X-HTTP-Method-Override', type);
+        if (beforeSend) return beforeSend.apply(this, arguments);
+      };
+    }
+
+    // Don't process data on a non-GET request.
+    if (params.type !== 'GET' && !options.emulateJSON) {
+      params.processData = false;
+    }
+
+    // Pass along `textStatus` and `errorThrown` from jQuery.
+    var error = options.error;
+    options.error = function(xhr, textStatus, errorThrown) {
+      options.textStatus = textStatus;
+      options.errorThrown = errorThrown;
+      if (error) error.call(options.context, xhr, textStatus, errorThrown);
+    };
+
+    // Make the request, allowing the user to override any Ajax options.
+    var xhr = options.xhr = Backbone.ajax(_.extend(params, options));
+    model.trigger('request', model, xhr, options);
+    return xhr;
+  };
+
+  // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
+  var methodMap = {
+    create: 'POST',
+    update: 'PUT',
+    patch: 'PATCH',
+    delete: 'DELETE',
+    read: 'GET'
+  };
+
+  // Set the default implementation of `Backbone.ajax` to proxy through to `$`.
+  // Override this if you'd like to use a different library.
+  Backbone.ajax = function() {
+    return Backbone.$.ajax.apply(Backbone.$, arguments);
+  };
+
+  // Backbone.Router
+  // ---------------
+
+  // Routers map faux-URLs to actions, and fire events when routes are
+  // matched. Creating a new one sets its `routes` hash, if not set statically.
+  var Router = Backbone.Router = function(options) {
+    options || (options = {});
+    this.preinitialize.apply(this, arguments);
+    if (options.routes) this.routes = options.routes;
+    this._bindRoutes();
+    this.initialize.apply(this, arguments);
+  };
+
+  // Cached regular expressions for matching named param parts and splatted
+  // parts of route strings.
+  var optionalParam = /\((.*?)\)/g;
+  var namedParam    = /(\(\?)?:\w+/g;
+  var splatParam    = /\*\w+/g;
+  var escapeRegExp  = /[\-{}\[\]+?.,\\\^$|#\s]/g;
+
+  // Set up all inheritable **Backbone.Router** properties and methods.
+  _.extend(Router.prototype, Events, {
+
+    // preinitialize is an empty function by default. You can override it with a function
+    // or object.  preinitialize will run before any instantiation logic is run in the Router.
+    preinitialize: function(){},
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Manually bind a single named route to a callback. For example:
+    //
+    //     this.route('search/:query/p:num', 'search', function(query, num) {
+    //       ...
+    //     });
+    //
+    route: function(route, name, callback) {
+      if (!_.isRegExp(route)) route = this._routeToRegExp(route);
+      if (_.isFunction(name)) {
+        callback = name;
+        name = '';
+      }
+      if (!callback) callback = this[name];
+      var router = this;
+      Backbone.history.route(route, function(fragment) {
+        var args = router._extractParameters(route, fragment);
+        if (router.execute(callback, args, name) !== false) {
+          router.trigger.apply(router, ['route:' + name].concat(args));
+          router.trigger('route', name, args);
+          Backbone.history.trigger('route', router, name, args);
+        }
+      });
+      return this;
+    },
+
+    // Execute a route handler with the provided parameters.  This is an
+    // excellent place to do pre-route setup or post-route cleanup.
+    execute: function(callback, args, name) {
+      if (callback) callback.apply(this, args);
+    },
+
+    // Simple proxy to `Backbone.history` to save a fragment into the history.
+    navigate: function(fragment, options) {
+      Backbone.history.navigate(fragment, options);
+      return this;
+    },
+
+    // Bind all defined routes to `Backbone.history`. We have to reverse the
+    // order of the routes here to support behavior where the most general
+    // routes can be defined at the bottom of the route map.
+    _bindRoutes: function() {
+      if (!this.routes) return;
+      this.routes = _.result(this, 'routes');
+      var route, routes = _.keys(this.routes);
+      while ((route = routes.pop()) != null) {
+        this.route(route, this.routes[route]);
+      }
+    },
+
+    // Convert a route string into a regular expression, suitable for matching
+    // against the current location hash.
+    _routeToRegExp: function(route) {
+      route = route.replace(escapeRegExp, '\\$&')
+        .replace(optionalParam, '(?:$1)?')
+        .replace(namedParam, function(match, optional) {
+          return optional ? match : '([^/?]+)';
+        })
+        .replace(splatParam, '([^?]*?)');
+      return new RegExp('^' + route + '(?:\\?([\\s\\S]*))?$');
+    },
+
+    // Given a route, and a URL fragment that it matches, return the array of
+    // extracted decoded parameters. Empty or unmatched parameters will be
+    // treated as `null` to normalize cross-browser behavior.
+    _extractParameters: function(route, fragment) {
+      var params = route.exec(fragment).slice(1);
+      return _.map(params, function(param, i) {
+        // Don't decode the search params.
+        if (i === params.length - 1) return param || null;
+        return param ? decodeURIComponent(param) : null;
+      });
+    }
+
+  });
+
+  // Backbone.History
+  // ----------------
+
+  // Handles cross-browser history management, based on either
+  // [pushState](http://diveintohtml5.info/history.html) and real URLs, or
+  // [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange)
+  // and URL fragments. If the browser supports neither (old IE, natch),
+  // falls back to polling.
+  var History = Backbone.History = function() {
+    this.handlers = [];
+    this.checkUrl = this.checkUrl.bind(this);
+
+    // Ensure that `History` can be used outside of the browser.
+    if (typeof window !== 'undefined') {
+      this.location = window.location;
+      this.history = window.history;
+    }
+  };
+
+  // Cached regex for stripping a leading hash/slash and trailing space.
+  var routeStripper = /^[#\/]|\s+$/g;
+
+  // Cached regex for stripping leading and trailing slashes.
+  var rootStripper = /^\/+|\/+$/g;
+
+  // Cached regex for stripping urls of hash.
+  var pathStripper = /#.*$/;
+
+  // Has the history handling already been started?
+  History.started = false;
+
+  // Set up all inheritable **Backbone.History** properties and methods.
+  _.extend(History.prototype, Events, {
+
+    // The default interval to poll for hash changes, if necessary, is
+    // twenty times a second.
+    interval: 50,
+
+    // Are we at the app root?
+    atRoot: function() {
+      var path = this.location.pathname.replace(/[^\/]$/, '$&/');
+      return path === this.root && !this.getSearch();
+    },
+
+    // Does the pathname match the root?
+    matchRoot: function() {
+      var path = this.decodeFragment(this.location.pathname);
+      var rootPath = path.slice(0, this.root.length - 1) + '/';
+      return rootPath === this.root;
+    },
+
+    // Unicode characters in `location.pathname` are percent encoded so they're
+    // decoded for comparison. `%25` should not be decoded since it may be part
+    // of an encoded parameter.
+    decodeFragment: function(fragment) {
+      return decodeURI(fragment.replace(/%25/g, '%2525'));
+    },
+
+    // In IE6, the hash fragment and search params are incorrect if the
+    // fragment contains `?`.
+    getSearch: function() {
+      var match = this.location.href.replace(/#.*/, '').match(/\?.+/);
+      return match ? match[0] : '';
+    },
+
+    // Gets the true hash value. Cannot use location.hash directly due to bug
+    // in Firefox where location.hash will always be decoded.
+    getHash: function(window) {
+      var match = (window || this).location.href.match(/#(.*)$/);
+      return match ? match[1] : '';
+    },
+
+    // Get the pathname and search params, without the root.
+    getPath: function() {
+      var path = this.decodeFragment(
+        this.location.pathname + this.getSearch()
+      ).slice(this.root.length - 1);
+      return path.charAt(0) === '/' ? path.slice(1) : path;
+    },
+
+    // Get the cross-browser normalized URL fragment from the path or hash.
+    getFragment: function(fragment) {
+      if (fragment == null) {
+        if (this._usePushState || !this._wantsHashChange) {
+          fragment = this.getPath();
+        } else {
+          fragment = this.getHash();
+        }
+      }
+      return fragment.replace(routeStripper, '');
+    },
+
+    // Start the hash change handling, returning `true` if the current URL matches
+    // an existing route, and `false` otherwise.
+    start: function(options) {
+      if (History.started) throw new Error('Backbone.history has already been started');
+      History.started = true;
+
+      // Figure out the initial configuration. Do we need an iframe?
+      // Is pushState desired ... is it available?
+      this.options          = _.extend({root: '/'}, this.options, options);
+      this.root             = this.options.root;
+      this._wantsHashChange = this.options.hashChange !== false;
+      this._hasHashChange   = 'onhashchange' in window && (document.documentMode === void 0 || document.documentMode > 7);
+      this._useHashChange   = this._wantsHashChange && this._hasHashChange;
+      this._wantsPushState  = !!this.options.pushState;
+      this._hasPushState    = !!(this.history && this.history.pushState);
+      this._usePushState    = this._wantsPushState && this._hasPushState;
+      this.fragment         = this.getFragment();
+
+      // Normalize root to always include a leading and trailing slash.
+      this.root = ('/' + this.root + '/').replace(rootStripper, '/');
+
+      // Transition from hashChange to pushState or vice versa if both are
+      // requested.
+      if (this._wantsHashChange && this._wantsPushState) {
+
+        // If we've started off with a route from a `pushState`-enabled
+        // browser, but we're currently in a browser that doesn't support it...
+        if (!this._hasPushState && !this.atRoot()) {
+          var rootPath = this.root.slice(0, -1) || '/';
+          this.location.replace(rootPath + '#' + this.getPath());
+          // Return immediately as browser will do redirect to new url
+          return true;
+
+        // Or if we've started out with a hash-based route, but we're currently
+        // in a browser where it could be `pushState`-based instead...
+        } else if (this._hasPushState && this.atRoot()) {
+          this.navigate(this.getHash(), {replace: true});
+        }
+
+      }
+
+      // Proxy an iframe to handle location events if the browser doesn't
+      // support the `hashchange` event, HTML5 history, or the user wants
+      // `hashChange` but not `pushState`.
+      if (!this._hasHashChange && this._wantsHashChange && !this._usePushState) {
+        this.iframe = document.createElement('iframe');
+        this.iframe.src = 'javascript:0';
+        this.iframe.style.display = 'none';
+        this.iframe.tabIndex = -1;
+        var body = document.body;
+        // Using `appendChild` will throw on IE < 9 if the document is not ready.
+        var iWindow = body.insertBefore(this.iframe, body.firstChild).contentWindow;
+        iWindow.document.open();
+        iWindow.document.close();
+        iWindow.location.hash = '#' + this.fragment;
+      }
+
+      // Add a cross-platform `addEventListener` shim for older browsers.
+      var addEventListener = window.addEventListener || function(eventName, listener) {
+        return attachEvent('on' + eventName, listener);
+      };
+
+      // Depending on whether we're using pushState or hashes, and whether
+      // 'onhashchange' is supported, determine how we check the URL state.
+      if (this._usePushState) {
+        addEventListener('popstate', this.checkUrl, false);
+      } else if (this._useHashChange && !this.iframe) {
+        addEventListener('hashchange', this.checkUrl, false);
+      } else if (this._wantsHashChange) {
+        this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
+      }
+
+      if (!this.options.silent) return this.loadUrl();
+    },
+
+    // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
+    // but possibly useful for unit testing Routers.
+    stop: function() {
+      // Add a cross-platform `removeEventListener` shim for older browsers.
+      var removeEventListener = window.removeEventListener || function(eventName, listener) {
+        return detachEvent('on' + eventName, listener);
+      };
+
+      // Remove window listeners.
+      if (this._usePushState) {
+        removeEventListener('popstate', this.checkUrl, false);
+      } else if (this._useHashChange && !this.iframe) {
+        removeEventListener('hashchange', this.checkUrl, false);
+      }
+
+      // Clean up the iframe if necessary.
+      if (this.iframe) {
+        document.body.removeChild(this.iframe);
+        this.iframe = null;
+      }
+
+      // Some environments will throw when clearing an undefined interval.
+      if (this._checkUrlInterval) clearInterval(this._checkUrlInterval);
+      History.started = false;
+    },
+
+    // Add a route to be tested when the fragment changes. Routes added later
+    // may override previous routes.
+    route: function(route, callback) {
+      this.handlers.unshift({route: route, callback: callback});
+    },
+
+    // Checks the current URL to see if it has changed, and if it has,
+    // calls `loadUrl`, normalizing across the hidden iframe.
+    checkUrl: function(e) {
+      var current = this.getFragment();
+
+      // If the user pressed the back button, the iframe's hash will have
+      // changed and we should use that for comparison.
+      if (current === this.fragment && this.iframe) {
+        current = this.getHash(this.iframe.contentWindow);
+      }
+
+      if (current === this.fragment) return false;
+      if (this.iframe) this.navigate(current);
+      this.loadUrl();
+    },
+
+    // Attempt to load the current URL fragment. If a route succeeds with a
+    // match, returns `true`. If no defined routes matches the fragment,
+    // returns `false`.
+    loadUrl: function(fragment) {
+      // If the root doesn't match, no routes can match either.
+      if (!this.matchRoot()) return false;
+      fragment = this.fragment = this.getFragment(fragment);
+      return _.some(this.handlers, function(handler) {
+        if (handler.route.test(fragment)) {
+          handler.callback(fragment);
+          return true;
+        }
+      });
+    },
+
+    // Save a fragment into the hash history, or replace the URL state if the
+    // 'replace' option is passed. You are responsible for properly URL-encoding
+    // the fragment in advance.
+    //
+    // The options object can contain `trigger: true` if you wish to have the
+    // route callback be fired (not usually desirable), or `replace: true`, if
+    // you wish to modify the current URL without adding an entry to the history.
+    navigate: function(fragment, options) {
+      if (!History.started) return false;
+      if (!options || options === true) options = {trigger: !!options};
+
+      // Normalize the fragment.
+      fragment = this.getFragment(fragment || '');
+
+      // Don't include a trailing slash on the root.
+      var rootPath = this.root;
+      if (fragment === '' || fragment.charAt(0) === '?') {
+        rootPath = rootPath.slice(0, -1) || '/';
+      }
+      var url = rootPath + fragment;
+
+      // Strip the fragment of the query and hash for matching.
+      fragment = fragment.replace(pathStripper, '');
+
+      // Decode for matching.
+      var decodedFragment = this.decodeFragment(fragment);
+
+      if (this.fragment === decodedFragment) return;
+      this.fragment = decodedFragment;
+
+      // If pushState is available, we use it to set the fragment as a real URL.
+      if (this._usePushState) {
+        this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url);
+
+      // If hash changes haven't been explicitly disabled, update the hash
+      // fragment to store history.
+      } else if (this._wantsHashChange) {
+        this._updateHash(this.location, fragment, options.replace);
+        if (this.iframe && fragment !== this.getHash(this.iframe.contentWindow)) {
+          var iWindow = this.iframe.contentWindow;
+
+          // Opening and closing the iframe tricks IE7 and earlier to push a
+          // history entry on hash-tag change.  When replace is true, we don't
+          // want this.
+          if (!options.replace) {
+            iWindow.document.open();
+            iWindow.document.close();
+          }
+
+          this._updateHash(iWindow.location, fragment, options.replace);
+        }
+
+      // If you've told us that you explicitly don't want fallback hashchange-
+      // based history, then `navigate` becomes a page refresh.
+      } else {
+        return this.location.assign(url);
+      }
+      if (options.trigger) return this.loadUrl(fragment);
+    },
+
+    // Update the hash location, either replacing the current entry, or adding
+    // a new one to the browser history.
+    _updateHash: function(location, fragment, replace) {
+      if (replace) {
+        var href = location.href.replace(/(javascript:|#).*$/, '');
+        location.replace(href + '#' + fragment);
+      } else {
+        // Some browsers require that `hash` contains a leading #.
+        location.hash = '#' + fragment;
+      }
+    }
+
+  });
+
+  // Create the default Backbone.history.
+  Backbone.history = new History;
+
+  // Helpers
+  // -------
+
+  // Helper function to correctly set up the prototype chain for subclasses.
+  // Similar to `goog.inherits`, but uses a hash of prototype properties and
+  // class properties to be extended.
+  var extend = function(protoProps, staticProps) {
+    var parent = this;
+    var child;
+
+    // The constructor function for the new subclass is either defined by you
+    // (the "constructor" property in your `extend` definition), or defaulted
+    // by us to simply call the parent constructor.
+    if (protoProps && _.has(protoProps, 'constructor')) {
+      child = protoProps.constructor;
+    } else {
+      child = function(){ return parent.apply(this, arguments); };
+    }
+
+    // Add static properties to the constructor function, if supplied.
+    _.extend(child, parent, staticProps);
+
+    // Set the prototype chain to inherit from `parent`, without calling
+    // `parent`'s constructor function and add the prototype properties.
+    child.prototype = _.create(parent.prototype, protoProps);
+    child.prototype.constructor = child;
+
+    // Set a convenience property in case the parent's prototype is needed
+    // later.
+    child.__super__ = parent.prototype;
+
+    return child;
+  };
+
+  // Set up inheritance for the model, collection, router, view and history.
+  Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend;
+
+  // Throw an error when a URL is needed, and none is supplied.
+  var urlError = function() {
+    throw new Error('A "url" property or function must be specified');
+  };
+
+  // Wrap an optional error callback with a fallback error event.
+  var wrapError = function(model, options) {
+    var error = options.error;
+    options.error = function(resp) {
+      if (error) error.call(options.context, model, resp, options);
+      model.trigger('error', model, resp, options);
+    };
+  };
+
+  return Backbone;
+});
+var Account = Backbone.Model.extend({
+
+    defaults: {
+        'id': 0,
+        'name': '',
+        'email': '',
+        'is_cof': '',
+        'promo': '',
+        'balance': '',
+        'is_frozen': false,
+        'departement': '',
+        'nickname': '',
+    },
+
+    url: function () {
+        return django_urls["kfet.account.read.json"](encodeURIComponent(this.get("trigramme")))
+    },
+
+    reset: function () {
+        // Réinitialise les attributs du modèle à leurs défaults, sauf le trigramme qui est bind à l'input.
+        // On n'utilise pas .clear() car on ne veut pas clear le trigramme.
+        this.set(this.defaults)
+    },
+
+    parse: function (resp, options) {
+        if (_.has(resp, 'balance')) {
+            return _.extend(resp, { 'balance': parseFloat(resp.balance) });
+        } else {
+            return resp;
+        }
+    },
+
+    view: function () {
+        var view_class;
+        if (!this.is_empty_account()) {
+            view_class = EmptyAccountView
+        } else if (this.get("trigramme") == 'LIQ') {
+            view_class = LIQView
+        } else {
+            view_class = AccountView
+        }
+        return new view_class({ model: this })
+    },
+
+    render: function () {
+        this.view().render();
+    },
+
+    is_empty_account: function () {
+        return (this.id != 0)
+    },
+})
+
+var AccountView = Backbone.View.extend({
+
+    el: '#account',
+    buttons: '.buttons',
+    id_field: "#id_on_acc",
+
+    props: _.keys(Account.prototype.defaults),
+
+    get: function (property) {
+        /* If the function this.get_<property> is defined,
+        we call it ; else we call this.model.<property>. */
+        var getter_name = `get_${property}`;
+        if (_.functions(this).includes(getter_name))
+            return this[getter_name]()
+        else
+            return this.model.get(property)
+    },
+
+    get_is_cof: function () {
+        return this.model.get("is_cof") ? 'COF' : 'Non-COF';
+    },
+
+    get_balance: function () {
+        return amountToUKF(this.model.get("balance"), this.model.get("is_cof"), true);
+    },
+
+    attr_data_balance: function () {
+        // Cette fonction est utilisée uniquement sur un compte valide
+        if (this.model.get("balance") < 0) {
+            return 'neg';
+        } else if (this.model.get("balance") <= 5) {
+            return 'low';
+        } else {
+            return 'ok';
+        }
+    },
+
+    get_buttons: function () {
+        var url = django_urls["kfet.account.read"](this.model.get("trigramme"));
+
+        return `<a href="${url}" class="btn btn-primary" target="_blank" title="Modifier"><span class="glyphicon glyphicon-cog"></span></a>`;
+    },
+
+    render: function () {
+        for (let prop of this.props) {
+            var selector = "#account-" + prop;
+            this.$(selector).text(this.get(prop));
+        }
+
+        this.$el.attr("data-balance", this.attr_data_balance());
+        this.$(this.buttons).html(this.get_buttons());
+        $(this.id_field).val(this.get("id"));
+    },
+})
+
+var LIQView = AccountView.extend({
+    get_balance: function () {
+        return "";
+    },
+
+    attr_data_balance: function () {
+        return 'ok';
+    }
+})
+
+var EmptyAccountView = AccountView.extend({
+    get: function () {
+        return '';
+    },
+
+    attr_data_balance: function () {
+        return '';
+    },
+
+    get_buttons: function () {
+        /* Léger changement de fonctionnement :
+        on affiche *toujours* le bouton de recherche si
+        le compte est invalide */
+        var buttons = '<button class="btn btn-primary search" title="Rechercher"><span class="glyphicon glyphicon-search"></span></button>';
+        var trigramme = this.model.get("trigramme")
+        if (trigramme.is_valid_trigramme()) {
+            trigramme = encodeURIComponent(trigramme);
+            var url_base = django_urls["kfet.account.create"]();
+            var url = `${url_base}?trigramme=${trigramme}`;
+            buttons += `<a href="${url}" class="btn btn-primary" target="_blank" title="Créer"><span class="glyphicon glyphicon-plus"></span></a>`;
+        }
+
+        return buttons
+    }
+})
+class AccountManager {
+    // Classe pour gérer la partie "compte" de K-Psul
+    // Devrait être la seule interface entre le JS de K-Psul et la logique des comptes.
+    constructor() {
+        // jQuery elements
+        this._$input = $("#id_trigramme");
+        this._$container = $("#account");
+        this._$article_select = $("#article_autocomplete")
+
+        // Subordinated classes
+        this.account = new Account({ "trigramme": "" });
+        this.search = new AccountSearch(this)
+
+        // Initialization
+        this._init_events();
+    }
+
+    get data() {
+        return this.account.toJSON();
+    }
+
+    _init_events() {
+        var that = this;
+
+        // L'input change ; on met à jour le compte
+        this._$input.on("input", () => this.update())
+
+        // Raccourci LIQ
+        this._$input.on("keydown", function (e) {
+            if (e.key == "ArrowDown") {
+                that.set("LIQ")
+            }
+        })
+
+        // Fonction de recherche
+        this._$container.on('click', '.search', function () {
+            that.search.open();
+        });
+
+        this._$container.on('keydown', function (e) {
+            if (e.key == "f" && e.ctrlKey) {
+                // Ctrl + F : universal search shortcut
+                that.search.open();
+                e.preventDefault();
+            }
+        });
+    }
+
+    set(trigramme) {
+        this._$input.val(trigramme);
+        this.update();
+    }
+
+    update() {
+        var trigramme = this._$input.val().format_trigramme();
+        this.account.set({ "trigramme": trigramme })
+        if (trigramme.is_valid_trigramme()) {
+            this.account.fetch({
+                "success": this._on_success.bind(this),
+                "error": this.reset.bind(this, false),
+            })
+        } else {
+            this.reset()
+        }
+    }
+
+    _on_success() {
+        // On utilise l'objet global window pour accéder aux fonctions nécessaires
+        this.account.render();
+        this._$article_select.focus();
+        window.updateBasketAmount();
+        window.updateBasketRel();
+    }
+
+    reset(hard_reset = false) {
+        this.account.reset();
+        this.account.render();
+
+        if (hard_reset) {
+            this._$input.val("");
+            this.update()
+        }
+    }
+}
+
+class AccountSearch {
+
+    constructor(manager) {
+        this.manager = manager;
+
+        this._content = '<input type="text" name="q" id="search_autocomplete" autocomplete="off" spellcheck="false" autofocus><div id="account_results"></div>';
+        this._input = '#search_autocomplete';
+        this._results_container = '#account_results';
+
+    }
+
+    open() {
+        var that = this;
+        this._$dialog = $.dialog({
+            title: 'Recherche de compte',
+            content: this._content,
+            backgroundDismiss: true,
+            animation: 'top',
+            closeAnimation: 'bottom',
+            keyboardEnabled: true,
+            onOpen: function () {
+                that._$input = $(that._input);
+                that._$results_container = $(that._results_container);
+                that._init_form()
+                    ._init_events();
+            },
+        });
+    }
+
+    _init_form() {
+        var that = this;
+
+        this._$input.yourlabsAutocomplete({
+            url: django_urls['kfet.account.search.autocomplete'](),
+            minimumCharacters: 2,
+            id: 'search_autocomplete',
+            choiceSelector: '.autocomplete-value',
+            placeholder: "Chercher un utilisateur K-Fêt",
+            container: that._$results_container,
+            box: that._$results_container,
+            fixPosition: function () { },
+        });
+
+        return this;
+    }
+
+    _init_events() {
+        this._$input.bind('selectChoice',
+            (e, choice, autocomplete) => this._on_select(e, choice, autocomplete)
+        );
+        return this;
+    }
+
+    _on_select(e, choice, autocomplete) {
+        // Une option est de la forme "<User> (<trigramme>)"
+        var choice_text = choice.text().trim();
+        var trigramme_regex = /\((.{3})\)$/;
+        // le match est de la forme [<global match>, <group match>]
+        var trigramme = choice_text.match(trigramme_regex)[1]
+        this.manager.set(trigramme);
+        this.close();
+    }
+
+    close() {
+        if (this._$dialog !== undefined) {
+            this._$dialog.close();
+        }
+    }
+}$(function () {
+    self.account_manager = new AccountManager();
+})
\ No newline at end of file
diff --git a/kfet/static/kfet/src/backbone.js b/kfet/static/kfet/src/kpsul/libs/backbone.js
similarity index 100%
rename from kfet/static/kfet/src/backbone.js
rename to kfet/static/kfet/src/kpsul/libs/backbone.js
diff --git a/kfet/static/kfet/src/underscore.js b/kfet/static/kfet/src/kpsul/libs/underscore.js
similarity index 100%
rename from kfet/static/kfet/src/underscore.js
rename to kfet/static/kfet/src/kpsul/libs/underscore.js
diff --git a/kfet/static/kfet/js/kpsul/managers/account_manager.js b/kfet/static/kfet/src/kpsul/managers/account_manager.js
similarity index 96%
rename from kfet/static/kfet/js/kpsul/managers/account_manager.js
rename to kfet/static/kfet/src/kpsul/managers/account_manager.js
index 2f89fc7e..3ee556a3 100644
--- a/kfet/static/kfet/js/kpsul/managers/account_manager.js
+++ b/kfet/static/kfet/src/kpsul/managers/account_manager.js
@@ -1,5 +1,3 @@
-import Account from "../models/account.js"
-
 class AccountManager {
     // Classe pour gérer la partie "compte" de K-Psul
     // Devrait être la seule interface entre le JS de K-Psul et la logique des comptes.
@@ -143,7 +141,7 @@ class AccountSearch {
         var choice_text = choice.text().trim();
         var trigramme_regex = /\((.{3})\)$/;
         // le match est de la forme [<global match>, <group match>]
-        trigramme = choice_text.match(trigramme_regex)[1]
+        var trigramme = choice_text.match(trigramme_regex)[1]
         this.manager.set(trigramme);
         this.close();
     }
@@ -153,6 +151,4 @@ class AccountSearch {
             this._$dialog.close();
         }
     }
-}
-
-export default AccountManager;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/kfet/static/kfet/js/kpsul/models/account.js b/kfet/static/kfet/src/kpsul/models/account.js
similarity index 99%
rename from kfet/static/kfet/js/kpsul/models/account.js
rename to kfet/static/kfet/src/kpsul/models/account.js
index 903af534..8f5d7e6c 100644
--- a/kfet/static/kfet/js/kpsul/models/account.js
+++ b/kfet/static/kfet/src/kpsul/models/account.js
@@ -144,5 +144,3 @@ var EmptyAccountView = AccountView.extend({
         return buttons
     }
 })
-
-export default Account;
\ No newline at end of file
diff --git a/kfet/templates/kfet/kpsul.html b/kfet/templates/kfet/kpsul.html
index 4481252d..4fb90ce2 100644
--- a/kfet/templates/kfet/kpsul.html
+++ b/kfet/templates/kfet/kpsul.html
@@ -7,9 +7,7 @@
 <script type="text/javascript" src="{% static 'kfet/vendor/moment/moment-timezone-with-data-2012-2022.min.js' %}"></script>
 <script type="text/javascript" src="{% static 'kfet/js/history.js' %}"></script>
 <script type="text/javascript" src="{% url 'js_reverse' %}" ></script>
-<script type="text/javascript" src="{% static 'kfet/vendor/underscore-min.js' %}"></script>
-<script type="text/javascript" src="{% static 'kfet/vendor/backbone-min.js' %}"></script>
-<script type="module" src="{% static 'kfet/js/kpsul.js' %}"></script>
+<script type="text/javascript" src="{% static 'kfet/js/kpsul.min.js' %}"></script>
 {% endblock %}
 
 {% block title %}K-Psul{% endblock %}