Rx now ships with Mono, using our own Causes Problems™
Build our own version of Microsoft.Reactive.Testing

Because the official Mono Rx is strong named and we don't have the key,
yet *don't* ship Microsoft.Reactive.Testing, we need to build our own.
Xamarin Studio really wants to fiddle with this
Replace Rx binaries for iOS / Android
Project file fiddling
Add a project for iOS / Android for Microsoft.Reactive.Testing
Project fiddling part 2
Don't try to build delegate stubs for interfaces
Patch up ReactiveUI.Events for MonoMac
Merge pull request #378 from reactiveui/move-to-official-rx

Move to official Reactive Extensions for Xamarin.*
Merge remote-tracking branch 'origin/master' into ios-datasource