A bug in range and map change listeners has been fixed such that `dispatchesRangeChanges` and `dispatchesMapChanges` have been made non-enumerable on observed arrays. This fixes an issue that made equivalent observed and non-observed arrays difficult to compare. Also, The List and Set collections can now dispatch range change events, which in turn makes them bindable through FRB expressions that could previously only react to changes in Array and SortedSet.