Undefined dependency versions are a problem

[Bananeweizen]

The project doesn't specify which versions of Xtext, PDE etc. it depends on. That's quite bad for development and publishing, as some parts use deprecated methods, or simply lie about being able to run on Java 11 (there are transitive Java 17 dependencies meanwhile). I'd suggest to lift the requirements to Java 21, Xtext 2.35 and release train 2024-06. That way the Xtend last() method conflict with Java 21 and several other issues can be cleaned up more easily, and several other platform breakages of the past are avoided.

Any comments?