A modern programming language that makes developers happier.

kotlinlang

Honestly, as I said, I'm not sure yet if that should be in Kotlin. The difference with Java would make Java interop more difficult, and given I have no clear idea of all the implementation details difficulties, that might be a dumb idea. This was more food for thought than anything else. Of course, if someone from JB finds the idea interesting and doable in a clean way, why not. But I don't feel confident enough with the feature to make a feature request.