/*
  knockback-core-stack.js 1.2.0
  Copyright (c)  2011-2017 Kevin Malakoff.
  License: MIT (http://www.opensource.org/licenses/mit-license.php)
  Source: https://github.com/kmalakoff/knockback
  Dependencies: Knockout.js, Backbone.js, and Underscore.js (or LoDash.js).
  Optional dependencies: Backbone.ModelRef.js and BackboneORM.
*/
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n,s,a,u,l,c;for(e||i._throwMissing(this,"obj"),t||i._throwMissing(this,"callback_info"),s=t.event_selector?t.event_selector.split(" "):["change"],c=this.ee,a=function(n){return function(s){var a,u;if((a=n.__kb.callbacks[s])||(a=n.__kb.callbacks[s]={model:null,list:[],fn:function(e){var t,n,r,u;for(u=a.list,n=0,r=u.length;n<r;n++)t=u[n],t.update&&(e&&t.key&&e.hasChanged&&!e.hasChanged(o.utils.unwrapObservable(t.key))||(!i.statistics||i.statistics.addModelEvent({name:s,model:e,key:t.key,path:t.path}),t.update()));return null}}),a.list.push(u=r.defaults({obj:e},t)),c)return n._onModelLoaded(c)}}(this),u=0,l=s.length;u<l;u++)n=s[u],n&&a(n);return this},e.prototype.releaseCallbacks=function(e){var t,n,r;this.ee=null,r=this.__kb.callbacks;for(n in r)t=r[n],this._unbindCallbacks(n,t,i.wasReleased(e));return delete this.__kb.callbacks},e.prototype._onModelLoaded=function(e){var t,n,r,o,s,a,u,l;this.ee=e,a=this.__kb.callbacks;for(n in a)for(t=a[n],t.model&&t.model!==e&&this._unbindCallbacks(n,t,!0),t.model||(t.model=e,e.bind(n,t.fn)),u=t.list,r=0,s=u.length;r<s;r++)o=u[r],o.unbind_fn||(o.unbind_fn=null!=(l=i.settings.orm)?l.bind(e,o.key,o.update,o.path):void 0),o.emitter&&o.emitter(e)},e.prototype._onModelUnloaded=function(e){var t,n,r;if(this.ee===e){this.ee=null,r=this.__kb.callbacks;for(n in r)t=r[n],this._unbindCallbacks(n,t)}},e.prototype._unbindCallbacks=function(e,t,n){var r,o,s,a;for(t.model&&(t.model.unbind(e,t.fn),t.model=null),a=t.list,r=0,s=a.length;r<s;r++)o=a[r],o.unbind_fn&&(o.unbind_fn(),o.unbind_fn=null),!o.emitter||n||i.wasReleased(o.obj)||o.emitter(null)},e}(),i.emitterObservable=function(e,t){return new i.EventWatcher(e,t)}},function(e,t,n){var r,i;r=(i=n(0))._,i.Factory=function(){function e(e){this.paths={},e&&(this.parent_factory=e)}return e.useOptionsOrCreate=function(e,t,n){var r;return e.factory&&(!e.factories||e.factories&&e.factory.hasPathMappings(e.factories,n))?i.utils.wrappedFactory(t,e.factory):(r=i.utils.wrappedFactory(t,new i.Factory(e.factory)),e.factories&&r.addPathMappings(e.factories,n),r)},e.prototype.hasPath=function(e){var t;return this.paths.hasOwnProperty(e)||(null!=(t=this.parent_factory)?t.hasPath(e):void 0)},e.prototype.addPathMapping=function(e,t){return this.paths[e]=t},e.prototype.addPathMappings=function(e,t){var n,r;for(r in e)n=e[r],this.paths[i.utils.pathJoin(t,r)]=n},e.prototype.hasPathMappings=function(e,t){var n,r,o,s;n=!0;for(s in e)r=e[s],n&=(o=this.creatorForPath(null,i.utils.pathJoin(t,s)))&&r===o;return n},e.prototype.creatorForPath=function(e,t){var n,r;return(n=this.paths[t])?n.view_model?n.view_model:n:(n=null!=(r=this.parent_factory)?r.creatorForPath(e,t):void 0)?n:null},e}()},function(e,t,n){var r;e.exports=r=n(0),r.configure=n(2),r.modules={underscore:r._,backbone:r.Parse||r.Backbone,knockout:r.ko}},function(e,t,n){(function(e){var t,r,i,o,s,a,u;u=null!=u?u:e,a=i=n(0),t=a._,o=a.ko,i.RECUSIVE_AUTO_INJECT=!0,o.bindingHandlers.inject={init:function(e,t,n,r){return i.Inject.inject(o.utils.unwrapObservable(t()),r,e,t,n)}},i.Inject=function(){function e(){}return e.inject=function(e,n,r,o,s,a){var u;return u=function(e){var u,l,c;if(t.isFunction(e))n=new e(n,r,o,s),i.releaseOnNodeRemove(n,r);else{e.view_model&&(n=new e.view_model(n,r,o,s),i.releaseOnNodeRemove(n,r));for(u in e)c=e[u],"view_model"!==u&&("create"===u?c(n,r,o,s):t.isObject(c)&&!t.isFunction(c)?(l=a||c&&c.create?{}:n,n[u]=i.Inject.inject(c,l,r,o,s,!0)):n[u]=c)}return n},a?u(e):i.ignore(function(){return u(e)})},e.injectViewModels=function(e){var n,r,o,s,a,l,c,d,f,p;for(p=[],l=function(e){var n,r,i,o,s;for(e.__kb_injected||e.attributes&&(n=t.find(e.attributes,function(e){return"kb-inject"===e.name}))&&(e.__kb_injected=!0,p.push({el:e,view_model:{},binding:n.value})),s=e.childNodes,i=0,o=s.length;i<o;i++)r=s[i],l(r)},!e&&(null!=u?u.document:void 0)&&(e=u.document),l(e),c=0,d=p.length;c<d;c++)r=p[c],(a=r.binding)&&(a.search(/[:]/)<0||(a="{"+a+"}"),s=new Function("","return ( "+a+" )")(),s||(s={}),!s.options||(f=s.options,delete s.options),f||(f={}),r.view_model=i.Inject.inject(s,r.view_model,r.el,null,null,!0),n=r.view_model.afterBinding||f.afterBinding,o=r.view_model.beforeBinding||f.beforeBinding),o&&o.call(r.view_model,r.view_model,r.el,f),i.applyBindings(r.view_model,r.el,f),n&&n.call(r.view_model,r.view_model,r.el,f);return p},e}(),r=o.applyBindings,o.applyBindings=function(e,t){var n;if(n=i.RECUSIVE_AUTO_INJECT?i.injectViewModels(t):[],!n.length)return r.apply(this,arguments)},i.injectViewModels=i.Inject.injectViewModels,"undefined"!=typeof document&&null!==document&&(s=function(){return"complete"!==document.readyState?setTimeout(s,0):i.injectViewModels()})()}).call(t,n(1))},function(e,t,n){var r,i,o,s,a;o=(i=n(0)).ko,(null!=(s=o.subscribable)&&null!=(a=s.fn)?a.extend:void 0)&&(r=o.subscribable.fn.extend,o.subscribable.fn.extend=function(){var e,t;return t=r.apply(this,arguments),t!==this&&i.isReleaseable(this)&&(e=t.dispose,t.dispose=function(n){return function(){return null!=e&&e.apply(t,arguments),i.release(n)}}(this)),t})},function(e,t,n){var r,i,o,s,a,u,l;l=a=n(0),s=l._,u=l.ko,o=n(3),i=["value","valueType","destroy"],r=["args","read","write"],a.Observable=function(){function e(e,t,n,l){return this._vm=null!=l?l:{},a.ignore(function(l){return function(){var c,d,f,p,h,v;for(t||a._throwMissing(l,"key_or_info"),l.key=t.key||t,f=0,h=r.length;f<h;f++)p=r[f],t[p]&&(l[p]=t[p]);return c=a.utils.collapseOptions(n),d=c.event_watcher,delete c.event_watcher,l._value=new o(c),l._model=u.observable(),v=a.utils.wrappedObservable(l,u.computed({read:function(){var e,t,n,r,i,o,c;for(e=l._model(),o=n=[l.key].concat(l.args||[]),r=0,i=o.length;r<i;r++)t=o[r],u.utils.unwrapObservable(t);return null!=(c=a.utils.wrappedEventWatcher(l))&&c.emitter(e||null),l.read?l.update(l.read.apply(l._vm,n)):s.isUndefined(e)||a.ignore(function(){return l.update(a.getValue(e,a.peek(l.key),l.args))}),l._value.value()},write:function(e){return a.ignore(function(){var t,n;return n=a.utils.unwrapModels(e),t=a.peek(l._model),l.write?(l.write.call(l._vm,n),e=a.getValue(t,a.peek(l.key),l.args)):t&&a.setValue(t,a.peek(l.key),n),l.update(e)})},owner:l._vm})),v.__kb_is_o=!0,c.store=a.utils.wrappedStore(v,c.store),c.path=a.utils.pathJoin(c.path,l.key),c.factories&&("function"==typeof c.factories||c.factories.create)?(c.factory=a.utils.wrappedFactory(v,new a.Factory(c.factory)),c.factory.addPathMapping(c.path,c.factories)):c.factory=a.Factory.useOptionsOrCreate(c,v,c.path),delete c.factories,a.publishMethods(v,l,i),v.model=l.model=u.computed({read:function(){return u.utils.unwrapObservable(l._model)},write:function(e){return a.ignore(function(){var t;if(!l.__kb_released&&a.peek(l._model)!==e)return t=a.getValue(e,a.peek(l.key),l.args),l._model(e),e?s.isUndefined(t)?void 0:l.update(t):l.update(null)})}}),a.EventWatcher.useOptionsOrCreate({event_watcher:d},e||null,l,{emitter:l.model,update:function(){return a.ignore(function(){return l.update()})},key:l.key,path:c.path}),l._value.rawValue()||l._value.update(),a.LocalizedObservable&&t.localizer&&(v=new t.localizer(v)),a.DefaultObservable&&t.hasOwnProperty("default")&&(v=a.defaultObservable(v,t.default)),v}}(this))}return e.prototype.destroy=function(){var e;return e=a.utils.wrappedObservable(this),this.__kb_released=!0,this._value.destroy(),this._value=null,this.model.dispose(),this.model=e.model=null,a.utils.wrappedDestroy(this)},e.prototype.value=function(){return this._value.rawValue()},e.prototype.valueType=function(){return this._value.valueType(a.peek(this._model),a.peek(this.key))},e.prototype.update=function(e){if(!this.__kb_released)return arguments.length||(e=a.getValue(a.peek(this._model),a.peek(this.key))),this._value.update(e)},e}(),a.observable=function(e,t,n,r){return new a.Observable(e,t,n,r)}},function(e,t,n){var r,i;r=(i=n(0))._,e.exports=i.Statistics=function(){function e(){this.model_events_tracker=[],this.registered_tracker={}}return e.prototype.clear=function(){return this.model_events_tracker=[]},e.prototype.addModelEvent=function(e){return this.model_events_tracker.push(e)},e.prototype.modelEventsStatsString=function(){var e,t,n,i;n="",n+="Total Count: "+this.model_events_tracker.length,e=r.groupBy(this.model_events_tracker,function(e){return"event name: '"+e.name+"', attribute name: '"+e.key+"'"});for(t in e)i=e[t],n+="\n "+t+", count: "+i.length;return n},e.prototype.register=function(e,t){return this.registeredTracker(e).push(t)},e.prototype.unregister=function(e,t){var n,i;return i=this.registeredTracker(e),(n=r.indexOf(i,t))<0?"undefined"!=typeof console&&null!==console?console.log("kb.Statistics: failed to unregister type: "+e):void 0:i.splice(n,1)},e.prototype.registeredCount=function(e){var t,n,r;if(e)return this.registeredTracker(e).length;t=0,n=this.registered_tracker[e];for(e in n)r=n[e],t+=r.length;return t},e.prototype.registeredStatsString=function(e){var t,n,r,i,o;n="",t=this.registered_tracker;for(r in t)i=t[r],i.length&&(o&&(n+="\n "),n+=(r?r:"No Name")+": "+i.length,o=!0);return n?n:e},e.prototype.registeredTracker=function(e){var t;return this.registered_tracker.hasOwnProperty(e)?this.registered_tracker[e]:(t=[],this.registered_tracker[e]=t,t)},e.eventsStats=function(e,t){var n,i,o,s,a,u,l;for(u={count:0},n=e._events||e._callbacks||{},a=t?[t]:r.keys(n),i=0,o=a.length;i<o;i++)if(t=a[i],s=n[t]){if(r.isArray(s))u[t]=r.compact(s).length;else for(u[t]=0,l=s.tail;(s=s.next)!==l;)u[t]++;u.count+=u[t]}return u},e}()},function(e,t,n){var r,i,o,s;s=i=n(0),r=s._,o=s.ko,e.exports=i.Store=function(){function e(){this.observable_records={},this.replaced_observables=[],i.Store.instances.push(this)}return e.instances=[],e.useOptionsOrCreate=function(e,t,n){var r;return e.store||i.utils.wrappedStoreIsOwned(n,!0),r=i.utils.wrappedStore(n,e.store||new i.Store),r.retain(n,t,e.creator),r},e.prototype.destroy=function(){var e;if(this.__kb_released=!0,this.clear(),(e=r.indexOf(i.Store.instances,this))>=0)return i.Store.instances.splice(e,1)},e.prototype.clear=function(){var e,t,n,r,i,o,s,a,u,l;a=[this.observable_records,{}],o=a[0],this.observable_records=a[1];for(t in o){s=o[t];for(e in s)i=s[e],this.release(i,!0)}for(u=[this.replaced_observables,[]],l=u[0],this.replaced_observables=u[1],n=0,r=l.length;n<r;n++)i=l[n],i.__kb_released||this.release(i,!0)},e.prototype.compact=function(){var e,t,n,r,i;i=this.observable_records;for(t in i){r=i[t];for(e in r)n=r[e],n.__kb_released&&delete r[e]}},e.prototype.retain=function(e,t,n){var r;if(this._canRegister(e)){if(n||(n=e.constructor),r=this.find(t,n)){if(r===e)return this._getOrCreateStoreReferences(e).ref_count++,e;this._retire(r)}return this._add(e,t,n),this._getOrCreateStoreReferences(e).ref_count++,e}},e.prototype.retainOrCreate=function(e,t,n){var s,a;if(!(s=this._creator(e,t)))return i.utils.createFromDefaultCreator(e,t);if(s.models_only)return e;if(a=this.find(e,s))return n&&i.settings.deep_retain?this.retain(a,e,s):a;if(!r.isFunction(s.create||s))throw new Error('Invalid factory for "'+t.path+'"');return a=i.ignore(function(n){return function(){return t=r.defaults({store:n,creator:s},t),a=s.create?s.create(e,t):new s(e,t),a||o.observable(null)}}(this)),this.retain(a,e,s),a},e.prototype.reuse=function(e,t){var n,o,s;if((o=i.utils.wrappedObject(e))!==t){if(!this._canRegister(e))throw new Error("Cannot reuse a simple observable");if(1!==this._refCount(e))throw new Error("Trying to change a shared view model. Ref count: "+this._refCount(e));n=i.utils.wrappedCreator(e)||e.constructor,r.isUndefined(o)||(s=this.find(o,n)),this.retain(e,t,n),s&&this.release(s)}},e.prototype.release=function(e,t){var n;if(!this._canRegister(e))return i.release(e);if(n=this._storeReferences(e)){if(!t&&--n.ref_count>0)return;this._clearStoreReferences(e)}return this._remove(e),e.__kb_released?void 0:t||this._refCount(e)<=1?i.release(e):void 0},e.prototype.find=function(e,t){var n,r,i;return(r=this.observable_records[this._creatorId(t)])?(null!=(i=n=r[this._cid(e)])?i.__kb_released:void 0)?(delete r[this._cid(e)],null):n:null},e.prototype._refCount=function(e){var t;return e.__kb_released?("undefined"!=typeof console&&null!==console&&console.log("Observable already released"),0):(t=i.utils.get(e,"stores_references"))?r.reduce(t,function(e,t){return e+t.ref_count},0):1},e.prototype._canRegister=function(e){return e&&!o.isObservable(e)&&!e.__kb_is_co},e.prototype._cid=function(e){var t;return t=e?e.cid||(e.cid=r.uniqueId("c")):"null"},e.prototype._creatorId=function(e){var t,n,i,o,s;for(t=e.create||e,t.__kb_cids||(t.__kb_cids=[]),s=t.__kb_cids,n=0,o=s.length;n<o;n++)if(i=s[n],i.create===t)return i.cid;return t.__kb_cids.push(i={create:t,cid:r.uniqueId("kb")}),i.cid},e.prototype._storeReferences=function(e){var t;if(t=i.utils.get(e,"stores_references"))return r.find(t,function(e){return function(t){return t.store===e}}(this))},e.prototype._getOrCreateStoreReferences=function(e){var t,n;return n=i.utils.orSet(e,"stores_references",[]),(t=r.find(n,function(e){return function(t){return t.store===e}}(this)))||n.push(t={store:this,ref_count:0,release:function(t){return function(){return t.release(e)}}(this)}),t},e.prototype._clearStoreReferences=function(e){var t,n,r,o;if(o=i.utils.get(e,"stores_references")){n=e.__kb.stores_references;for(t in n)if(r=n[t],r.store===this){e.__kb.stores_references.splice(t,1);break}}},e.prototype._retire=function(e){return this._clearStoreReferences(e),this.replaced_observables.push(e),this._remove(e)},e.prototype._add=function(e,t,n){var r,o;return n||(n=e.constructor),i.utils.wrappedObject(e,t),i.utils.wrappedCreator(e,n),((r=this.observable_records)[o=this._creatorId(n)]||(r[o]={}))[this._cid(t)]=e},e.prototype._remove=function(e){var t,n,r;return t=i.utils.wrappedCreator(e)||e.constructor,(n=this.find(r=i.utils.wrappedObject(e),t))&&n===e&&delete this.observable_records[this._creatorId(t)][this._cid(r)],i.utils.wrappedObject(e,null),i.utils.wrappedCreator(e,null)},e.prototype._creator=function(e,t){var n;return t.creator?t.creator:(n=i.utils.inferCreator(e,t.factory,t.path))?n:i.isModel(e)?i.ViewModel:void 0},e}()},function(e,t,n){var r,i,o,s;s=i=n(0),r=s._,o=s.ko,i.utils=function(){function e(){}return e.get=function(e,t,n){return e.__kb&&e.__kb.hasOwnProperty(t)?e.__kb[t]:n},e.set=function(e,t,n){return(e.__kb||(e.__kb={}))[t]=n},e.orSet=function(e,t,n){return(e.__kb||(e.__kb={})).hasOwnProperty(t)||(e.__kb[t]=n),e.__kb[t]},e.has=function(e,t){return e.__kb&&e.__kb.hasOwnProperty(t)},e.wrappedObservable=function(e,t){return 1===arguments.length?i.utils.get(e,"observable"):i.utils.set(e,"observable",t)},e.wrappedObject=function(e,t){return 1===arguments.length?i.utils.get(e,"object"):i.utils.set(e,"object",t)},e.wrappedCreator=function(e,t){return 1===arguments.length?i.utils.get(e,"creator"):i.utils.set(e,"creator",t)},e.wrappedModel=function(e,t){return 1===arguments.length?r.isUndefined(t=i.utils.get(e,"object"))?e:t:i.utils.set(e,"object",t)},e.wrappedStore=function(e,t){return 1===arguments.length?i.utils.get(e,"store"):i.utils.set(e,"store",t)},e.wrappedStoreIsOwned=function(e,t){return 1===arguments.length?i.utils.get(e,"store_is_owned"):i.utils.set(e,"store_is_owned",t)},e.wrappedFactory=function(e,t){return 1===arguments.length?i.utils.get(e,"factory"):i.utils.set(e,"factory",t)},e.wrappedEventWatcher=function(e,t){return 1===arguments.length?i.utils.get(e,"event_watcher"):i.utils.set(e,"event_watcher",t)},e.wrappedEventWatcherIsOwned=function(e,t){return 1===arguments.length?i.utils.get(e,"event_watcher_is_owned"):i.utils.set(e,"event_watcher_is_owned",t)},e.wrappedDestroy=n(20),e.valueType=function(e){return e?e.__kb_is_o?e.valueType():e.__kb_is_co||e instanceof i.Collection?i.TYPE_COLLECTION:e instanceof i.ViewModel||e instanceof i.Model?i.TYPE_MODEL:r.isArray(e)?i.TYPE_ARRAY:i.TYPE_SIMPLE:i.TYPE_UNKNOWN},e.pathJoin=function(e,t){return(e?"."!==e[e.length-1]?e+".":e:"")+t},e.optionsPathJoin=function(e,t){return r.defaults({path:this.pathJoin(e.path,t)},e)},e.inferCreator=function(e,t,n){var r;return t&&(r=t.creatorForPath(e,n))?r:e?e instanceof i.Model?i.ViewModel:e instanceof i.Collection?i.CollectionObservable:null:null},e.createFromDefaultCreator=function(e,t){return i.isModel(e)?i.viewModel(e,t):i.isCollection(e)?i.collectionObservable(e,t):r.isArray(e)?o.observableArray(e):o.observable(e)},e.collapseOptions=n(17),e.unwrapModels=n(19),e.resolveModel=function(e){return e&&i.Backbone&&i.Backbone.ModelRef&&e instanceof i.Backbone.ModelRef?e.model():e},e}()},function(e,t,n){var r,i,o,s,a,u,l,c;c=u=n(0),i=c._,l=c.ko,o=function(e,t){var n;if(n=e.__kb.internals&&~i.indexOf(e.__kb.internals,t)?"_"+t:t,!e.__kb.view_model.hasOwnProperty(n))return e.__kb.view_model[n]=null,n},s=function(e,t,n,r){var s;if((!e.__kb.excludes||!~i.indexOf(e.__kb.excludes,n))&&(!e.__kb.statics||!~i.indexOf(e.__kb.statics,n))&&(s=o(e,n)))return e[s]=e.__kb.view_model[s]=u.observable(t,n,r,e)},a=function(e,t){var n,r,i,s,a;for(s=e.__kb.statics,n=0,i=s.length;n<i;n++)r=s[n],(a=o(e,r))&&(t.has(a)?e[a]=e.__kb.view_model[a]=t.get(a):e.__kb.static_defaults&&a 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this.__kb.view_model=this.__kb.create_options=null,u.releaseKeys(this),u.utils.wrappedDestroy(this),!u.statistics||u.statistics.unregister("ViewModel",this)},e.prototype.shareOptions=function(){return{store:u.utils.wrappedStore(this),factory:u.utils.wrappedFactory(this)}},e.prototype.createObservables=function(e,t){var n,r,a,l,c,d,f,p,h;if(t)if(i.isArray(t))for(r=0,c=t.length;r<c;r++)a=t[r],s(this,e,a,this.__kb.create_options);else for(a in t)d=t[a],(h=o(this,a))&&(i.isString(d)||d.key||(d.key=h),this[h]=this.__kb.view_model[h]=u.observable(e,d,this.__kb.create_options,this));else{if(this.__kb.keys||!e)return;for(a in e.attributes)s(this,e,a,this.__kb.create_options);if(p=null!=(f=u.settings.orm)&&"function"==typeof f.keys?f.keys(e):void 0)for(n=0,l=p.length;n<l;n++)a=p[n],s(this,e,a,this.__kb.create_options)}},e}(),u.viewModel=function(e,t,n){return new u.ViewModel(arguments)}},function(e,t,n){(function(r){var i,o;!function(s){var a="object"==typeof 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l=this.attributes,c=this.changed,d=this._previousAttributes;for(var f in i)t=i[f],n.isEqual(l[f],t)||a.push(f),n.isEqual(d[f],t)?delete c[f]:c[f]=t,o?delete l[f]:l[f]=t;if(this.idAttribute in i&&(this.id=this.get(this.idAttribute)),!s){a.length&&(this._pending=r);for(var p=0;p<a.length;p++)this.trigger("change:"+a[p],this,l[a[p]],r)}if(u)return this;if(!s)for(;this._pending;)r=this._pending,this._pending=!1,this.trigger("change",this,r);return this._pending=!1,this._changing=!1,this},unset:function(e,t){return this.set(e,void 0,n.extend({},t,{unset:!0}))},clear:function(e){var t={};for(var r in this.attributes)t[r]=void 0;return this.set(t,n.extend({},e,{unset:!0}))},hasChanged:function(e){return null==e?!n.isEmpty(this.changed):n.has(this.changed,e)},changedAttributes:function(e){if(!e)return!!this.hasChanged()&&n.clone(this.changed);var t=this._changing?this._previousAttributes:this.attributes,r={};for(var i in e){var o=e[i];n.isEqual(t[i],o)||(r[i]=o)}return!!n.size(r)&&r},previous:function(e){return null!=e&&this._previousAttributes?this._previousAttributes[e]:null},previousAttributes:function(){return n.clone(this._previousAttributes)},fetch:function(e){e=n.extend({parse:!0},e);var t=this,r=e.success;return e.success=function(n){var i=e.parse?t.parse(n,e):n;return!!t.set(i,e)&&(r&&r.call(e.context,t,n,e),void t.trigger("sync",t,n,e))},V(this,e),this.sync("read",this,e)},save:function(e,t,r){var i;null==e||"object"==typeof e?(i=e,r=t):(i={})[e]=t,r=n.extend({validate:!0,parse:!0},r);var o=r.wait;if(i&&!o){if(!this.set(i,r))return!1}else if(!this._validate(i,r))return!1;var s=this,a=r.success,u=this.attributes;r.success=function(e){s.attributes=u;var t=r.parse?s.parse(e,r):e;return o&&(t=n.extend({},i,t)),!(t&&!s.set(t,r))&&(a&&a.call(r.context,s,e,r),void s.trigger("sync",s,e,r))},V(this,r),i&&o&&(this.attributes=n.extend({},u,i));var l=this.isNew()?"create":r.patch?"patch":"update";"patch"!==l||r.attrs||(r.attrs=i);var c=this.sync(l,this,r);return this.attributes=u,c},destroy:function(e){e=e?n.clone(e):{};var t=this,r=e.success,i=e.wait,o=function(){t.stopListening(),t.trigger("destroy",t,t.collection,e)};e.success=function(n){i&&o(),r&&r.call(e.context,t,n,e),t.isNew()||t.trigger("sync",t,n,e)};var s=!1;return this.isNew()?n.defer(e.success):(V(this,e),s=this.sync("delete",this,e)),i||o(),s},url:function(){var e=n.result(this,"urlRoot")||n.result(this.collection,"url")||B();if(this.isNew())return e;var t=this.get(this.idAttribute);return e.replace(/[^\/]$/,"$&/")+encodeURIComponent(t)},parse:function(e,t){return e},clone:function(){return new this.constructor(this.attributes)},isNew:function(){return!this.has(this.idAttribute)},isValid:function(e){return this._validate({},n.extend({},e,{validate:!0}))},_validate:function(e,t){if(!t.validate||!this.validate)return!0;e=n.extend({},this.attributes,e);var r=this.validationError=this.validate(e,t)||null;return!r||(this.trigger("invalid",this,r,n.extend(t,{validationError:r})),!1)}});var _={keys:1,values:1,pairs:1,invert:1,pick:0,omit:0,chain:1,isEmpty:1};a(b,_,"attributes");var x=t.Collection=function(e,t){t||(t={}),t.model&&(this.model=t.model),void 0!==t.comparator&&(this.comparator=t.comparator),this._reset(),this.initialize.apply(this,arguments),e&&this.reset(e,n.extend({silent:!0},t))},w={add:!0,remove:!0,merge:!0},k={add:!0,remove:!1},E=function(e,t,n){n=Math.min(Math.max(n,0),e.length);var r,i=Array(e.length-n),o=t.length;for(r=0;r<i.length;r++)i[r]=e[r+n];for(r=0;r<o;r++)e[r+n]=t[r];for(r=0;r<i.length;r++)e[r+o+n]=i[r]};n.extend(x.prototype,c,{model:b,initialize:function(){},toJSON:function(e){return this.map(function(t){return t.toJSON(e)})},sync:function(){return t.sync.apply(this,arguments)},add:function(e,t){return this.set(e,n.extend({merge:!1},t,k))},remove:function(e,t){t=n.extend({},t);var r=!n.isArray(e);e=r?[e]:e.slice();var i=this._removeModels(e,t);return!t.silent&&i.length&&(t.changes={added:[],merged:[],removed:i},this.trigger("update",this,t)),r?i[0]:i},set:function(e,t){if(null!=e){t=n.extend({},w,t),t.parse&&!this._isModel(e)&&(e=this.parse(e,t)||[]);var r=!n.isArray(e);e=r?[e]:e.slice();var i=t.at;null!=i&&(i=+i),i>this.length&&(i=this.length),i<0&&(i+=this.length+1);var o,s,a=[],u=[],l=[],c=[],d={},f=t.add,p=t.merge,h=t.remove,v=!1,m=this.comparator&&null==i&&t.sort!==!1,g=n.isString(this.comparator)?this.comparator:null;for(s=0;s<e.length;s++){o=e[s];var y=this.get(o);if(y){if(p&&o!==y){var b=this._isModel(o)?o.attributes:o;t.parse&&(b=y.parse(b,t)),y.set(b,t),l.push(y),m&&!v&&(v=y.hasChanged(g))}d[y.cid]||(d[y.cid]=!0,a.push(y)),e[s]=y}else f&&(o=e[s]=this._prepareModel(o,t),o&&(u.push(o),this._addReference(o,t),d[o.cid]=!0,a.push(o)))}if(h){for(s=0;s<this.length;s++)o=this.models[s],d[o.cid]||c.push(o);c.length&&this._removeModels(c,t)}var _=!1,x=!m&&f&&h;if(a.length&&x?(_=this.length!==a.length||n.some(this.models,function(e,t){return e!==a[t]}),this.models.length=0,E(this.models,a,0),this.length=this.models.length):u.length&&(m&&(v=!0),E(this.models,u,null==i?this.length:i),this.length=this.models.length),v&&this.sort({silent:!0}),!t.silent){for(s=0;s<u.length;s++)null!=i&&(t.index=i+s),o=u[s],o.trigger("add",o,this,t);(v||_)&&this.trigger("sort",this,t),(u.length||c.length||l.length)&&(t.changes={added:u,removed:c,merged:l},this.trigger("update",this,t))}return r?e[0]:e}},reset:function(e,t){t=t?n.clone(t):{};for(var r=0;r<this.models.length;r++)this._removeReference(this.models[r],t);return t.previousModels=this.models,this._reset(),e=this.add(e,n.extend({silent:!0},t)),t.silent||this.trigger("reset",this,t),e},push:function(e,t){return this.add(e,n.extend({at:this.length},t))},pop:function(e){var t=this.at(this.length-1);return this.remove(t,e)},unshift:function(e,t){return this.add(e,n.extend({at:0},t))},shift:function(e){var t=this.at(0);return this.remove(t,e)},slice:function(){return o.apply(this.models,arguments)},get:function(e){if(null!=e)return this._byId[e]||this._byId[this.modelId(e.attributes||e)]||e.cid&&this._byId[e.cid]},has:function(e){return null!=this.get(e)},at:function(e){return e<0&&(e+=this.length),this.models[e]},where:function(e,t){return this[t?"find":"filter"](e)},findWhere:function(e){return this.where(e,!0)},sort:function(e){var t=this.comparator;if(!t)throw new Error("Cannot sort a set without a comparator");e||(e={});var r=t.length;
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