New Project: Membus.Pcl
This project targets .NET 4.5.1 and Windows RT
Windows Phone is not supported due to ConcurrentDictionary usage
Silverlight is not supported due to IObservable interface
Starting the new tests project and pulling in existing tests take 1
Port to pcl completed

codewise. removed WINRT traces. Ported all tests.
Cleaning up FlexibleSubscribeAdapter

Now a single method "RegisterMethods" that registers publishing and
non-publishing methods based on the known rules.
Ability to publish an observable

This commit previously existed but unfortunately got lost. It is now
part of Membus' feature set again
Awaitable Publishing

This variant provides an awaitable publishing which will short-circuit
the usual setups and use an awaitable sequential publisher
Refactoring towards new FlexibleMessageEndpoints
Added ObservableSink,-Source,-Map + Tests
Roundup for release v3.0

- Removed Automaton and old projects (new test shows how to recreate
timer functionality from Rx
- New target for Nuget package
- version bump up