Modified the each helper to handle rendering and re-rendering of lists by cid rather than by propriatory values. This allows the helper to respond properly to .filter() and .where() values returned from computed properties. Fixed a bug where unset (or undefineds passed to set) were not handled properly in the custom collection set function, resulting in a temporary id that jquery uses for selecting element to persist when the custom element propagates its attribute changes to the respective models. Backbone gives preferance to model ids when searching for models in a collection, so this was messing up return values for .where() statements. Weird obscure error that is now resolved
npm version bump
Merge branch 'master' of https://github.com/epicmiller/rebound