scala-continuations 
scala-continuations is a library and a compiler plugin for Scala language that provides support for CPS transformations.
You may also be interested in https://github.com/scala/scala-async, which covers what was once the most common use case for the continuations plugin.
Maintenance
This library is community-maintained.
There is not currently a lead maintainer. If you would like to volunteer, please open an issue and say so.
(In the absence of a volunteer maintainer, the Scala team at Lightbend is doing the barest minimum maintenance.)
Scala versions supported
The current development branch supports Scala 2.11 and 2.12 on JDK 8+. (Older artifacts, supporting older Scala versions, remain available on Maven Central.)
The support for Scala 2.13 is work in progress.
