I know this engine is set to support C# scripting soon, but I have an idea that could potentially enable the engine to support a multitude of programming languages while only maintaining one. You may have heard of a programming language called "Haxe". Well, not many seem to know that it's compiler has an interesting feature that allows it to trans-pile to multiple different languages, including C#, C++, lua, java, etc! It might not be perfect, but Haxe, including it's compiler, is open-source... It's just an idea to consider!

If you wish to read up on the language and it's compiler, they have a manual:
https://haxe.org/manual/compiler-usage.html

Thanks for your time,
erherhh4herh.