Awesome project! Having unified tools is a boon for those of us who work across many different dialects.

One piece of feedback though - I've never been a huge fan of using backslashes for anything that isn't escaping as it can get confusing to know when it's escaping or if it's syntactic (do I use two slashes here? Or three or four? Especially when piping input or putting stuff in text files).

Very cool though and will be keeping an eye on it!