Merge branch 'release/0.9.4' into develop

* release/0.9.4:
  Bump version
  Update changelog
Add style for using ItemsControls with a Conductor
Make Execute.OnUIThread synchronous, with BeginOnUIThread being the async version
Tidy up Execute, and add a new method which dispatches asynchronously, or runs synchronously
Rename Conductor<T>.Collections to Conductor<T>.Collection, and move Conductor<T>.Collections.Nagivation to Conductor<T>.StackNavigation
Fix StyletConductorItemsControl style
EventAction defaults to Enable if the ActionTarget is null
Fix tests involving changes to Execute
Update changelog
Bump version
Merge branch 'release/0.9.5'