What languages are supported? At least on mobile, there is zero mention of language support outside of testimonials and screenshots. Is it just Java and C++?
Right, it's "just" Java, C and C++ for now but we are planning to extend our available languages as soon as possible!
would that happen to include scala?
Unfortunately it doesn't. Even though Scala and Java output the same kind of bytecode, these languages have different language specifications. We currently only support what's in the JLS.