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kotlinx.coroutines v0.5-beta Release Notes

    • Switched to Kotlin version 1.1.0-beta-22 (republished version).
    • ✂ Removed currentCoroutineContext and related thread-locals without replacement. Explicitly pass coroutine context around if needed.
    • 🏗 lazyDefer(context) {...} coroutine builder and LazyDeferred interface are introduced.
    • ⏱ The default behaviour of all coroutine dispatchers is changed to always schedule execution of new coroutine for later in this thread or thread pool. Correspondingly, CoroutineDispatcher.isDispatchNeeded function has a default implementation that returns true.
    • NonCancellable context is introduced.
    • 🐎 Performance optimizations for cancellable continuations (fewer objects created).
    • 📄 A [guide on coroutines](docs/topics/coroutines-guide.md) is added.