return[{removed:removed,added:added}];}};Polymer.Collection.get=function(userArray){return Polymer._collections.get(userArray)||new Polymer.Collection(userArray);};Polymer.Collection.applySplices=function(userArray,splices){var coll=Polymer._collections.get(userArray);return coll?coll._applySplices(splices):null;};Polymer({is:'dom-repeat',extends:'template',_template:null,properties:{items:{type:Array},as:{type:String,value:'item'},indexAs:{type:String,value:'index'},sort:{type:Function...