remove unused type parameter that introduced ambiguity
Merge pull request #191 from wendazhou/RaisePropertyChangedAmbiguity

remove unused type parameter that introduced ambiguity
Fix WinRT to register ISuspensionHost on startup
Fix WinRT initialization bug in WaitForDispatcherScheduler
NInject hates public static read-write properties
Various sample fixes
Warn people who attempt to use Property Change Tracking with non-ReactiveObjects, and enable support for INotifyPropertyChanged. Closes #185, maybe.