1.0.0-RC1

Version 1.0.0-RC1

• Coroutines API is updated to Kotlin 1.3.
• Deprecated API is removed or marked as internal.
• Experimental and internal coroutine API is marked with corresponding kotlin.experimental.Experimental annotation. If you are using @ExperimentalCoroutinesApi or @InternalCoroutinesApi you should explicitly opt-in otherwise, compilation warning (or error) will be produced.
• Unconfined dispatcher (and all dispatchers which support immediate invocation) forms event-loop on top of the current thread, thus preventing all StackOverflowErrors. Unconfined dispatcher is now much safer for the general use and may leave its experimental status soon (#704).
• Significantly improved performance of suspending hot loops in kotlinx.coroutines (#537).
• Proguard rules are embedded into coroutines JAR to assist jettifier (#657)
• Fixed bug in shutdown sequence of runBlocking (#692).
• ReceiveChannel.receiveOrNull is marked as obsolete and deprecated.
• Job.cancel(cause) and ReceiveChannel.cancel(cause) are deprecated, cancel() returns Unit (#713).