Add ReactiveCollectionViewSource and ReactiveCollectionViewCell.
New internal class CommonReactiveSource.
Merge pull request #1 from meteficha/ReactiveCollectionView

New internal class CommonReactiveSource.
Safer disposing.
Allow unsubscribing from RegisterAsync

Note that this still PermaRefs for methods that don't return a value,
since I suspect many people are not correctly subscribing to these
methods.
Formatting only.
Remove finalizer in CommonReactiveSource.

Also, seal class and remove virtual Dispose method.
Add InvokeCommand that is expression-based
Merge branch 'master' of https://github.com/reactiveui/ReactiveUI
Merge remote-tracking branch 'origin/pr/397'
Add an Updated IObservable to CommonReactiveSource.
Fixup the ReactiveUI_VSAll solution
Formatting and renaming only.
Rename backing field to match property
Merge pull request #400 from reactiveui/UpdatedSource

Add an Updated IObservable to CommonReactiveSource.
CommonReactiveSource allows section info list to be updated.

Note that now we require at least IReadOnlyList instead of
just IEnumerable.  I argue that this is the morally correct
thing to do since it allows us to ditch .ToList().
Reactive{Collection,Table}ViewSource now are IReactiveNotifyPropertyChanged.

Uses copy-paste from ReactiveNSView.
Stronger-typed CommonReactiveSource.
New Data property for Reactive{Collection,Table}ViewSource.
CommonReactiveSource now reacts to section changes.