I don't know if this has been said before, but I'd like these compiler options stabilized: <https://github.com/nim-lang/Nim/blob/version-1-6/compiler/options.nim#L190>
We should not have to compile the Nim compiler ourselves to use compile time FFI feature, for example. Also, `forLoopMacros` is apparently there for backwards compat, just remove it in v2 since we can break backwards compat.
