Disable buddy collection view source
Cleanup
Disambiguate ordered dictionary ordered-indexing
Add ObservableList
Add ObservableLookup
Update Cadenza
Add INCC to ClientUserManager and ILookup for channels
Expose ByChannel on user handler
Add CaseConverter
Add persisting collections to ObservableLookup
Expose IClientUserHandler SyncRoot
Expose IClientChannelHandler SyncRoot
Fix Cadenza reference
Keep observables around in ClientUserManager
Use CollectionView in ServerViewModel
Add UserViewModel.IsTalking
Synchronize CollectionView
Update ChannelViewModel CollectionView usage
Fix CollectionView setup

It was trying to convert items before ItemConverter had been set, by way
of invoking this() from the overloaded constructor.
Blend