0.13

• New kotlinx-coroutinex-android module with Android UI context implementation
• Introduced whileSelect convenience function
• Implemented ConflatedChannel
• Renamed various toXXX conversion functions to asXXX (old names are deprecated)
• run is optimized with fast-path case and no longer has CoroutineScope in its block
• Fixed dispatching logic of withTimeout (removed extra dispatch)
• EventLoop that is used by runBlocking now implements Delay, giving more predictable test behavior
• Various refactorings related to resource management and timeouts:
  • Job.Registration is renamed to DisposableHandle
  • EmptyRegistration is renamed to NonDisposableHandle
  • Job.unregisterOnCompletion is renamed to Job.disposeOnCompletion
  • Delay.invokeOnTimeout is introduced
  • withTimeout now uses Delay.invokeOnTimeout when available
• A number of improvement for reactive streams and Rx:
  • Introduced rxFlowable builder for Rx 2.x
  • Scheduler.asCoroutineDispatcher extension for Rx 2.x
  • Fixed bug with sometimes missing onComplete in publish, rxObservable, and rxFlowable builders
  • Channels that are open for reactive streams are now Closeable
  • Fixed CompletableSource.await and added test for it
  • Removed rx.Completable.await due to name conflict
• New documentation:
  • Guide to UI programming with coroutines
  • Guide to reactive streams with coroutines
• Code is published to JCenter repository