Just downloaded kotlin's git, compiled it and tested 1.1 coroutines within intelliJ.
It was a bit confusing at the beginning, but I got it working just fine. And it is great, very good job 🙂
I created a GeneratorController/yield example from scratch, since the one from here:
https://github.com/Kotlin/kotlin-coroutines/blob/master/examples/yield.kt didn't worked for me out of the box.
The example can be found here:
https://gist.github.com/soywiz/4076f4e9b36e11a43e44dbbcaddacc9f
It creates an infinite integer list using a generator, and then applies a lazyFilter, so it prints stuff without calculating/storing the whole collection which is pretty cool and similar to .net linq.