A very promising library, although experimental. Even has Android-specific extensions (<a href="https://github.com/Kotlin/anko/wiki/Anko-Coroutines" rel="nofollow">https://github.com/Kotlin/anko/wiki/Anko-Coroutines</a>).
What do you guys think about how it compares to Rx? There are opinions about they are on a different abstraction level so they don't compete with each other.