Fix observed collection to clear this.partialData when the collection is sorted
Clean up Observable tests to use fetch() instead of forEach(no-op)
Add comma-separated event support to Observable.on
Remove old TODOs and add default event properties
Fix Observable to call fetch when retrieving data
Update Store to emit refresh when sort is called
Define parse method in base Store
Update Memory to emit 'refresh' without event obj
Support array and comparator args to Store#sort
Update Store API documentation
Underscore-prefix private tracked events
Fix Observable tests
Add Request methods for rendering sort and filter params
Tighten Observable handling of new item with default index
Fix Observable issue introduced by rebase+merge fixes