A modern programming language that makes developers happier.

kotlinlang

We have moved to Kotlin `1.1-M04` on Spring Framework master in order to be able to perform tests with Kotlin JSR 223 support. Sadly, everybody using our snapshot builds with Kotlin `1.0.6` get a `Error: Kotlin: Class ‘FooExtension' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler` error message even if I specified `kotlinOptions.apiVersion = 1.0` and `kotlinOptions.languageVersion = 1.0` in our Gradle build.