Initial EntityFramework 6 Support
EF Support redesigned and moved to DREObject.cs
Redesigned DRE collection handling. Added EF change tracking to DRE.
Apply DRE collection changes to WinRT8.
Collection API Changes. Removed Dependency Stack/Queue.
Fixed API related build error.
Fixes for new collection code-gen and incorrect DRE data registration.
EF6 improvements. Changed version numbers to match NETPath.
DREObject.Unregister now returns the object being unregistered.