* Update coffeescript.yaml
We need much much more modern coffeescript standards, the current one has broken `0x123456` (hex) and single quotes, and doesn't support multiline comments. This PR aims to fix that. I'm no regexp expert, I just based this off JS', so tell me if I did anything wrong.
* Update coffeescript.yaml
Use the 'regexp2' library for lookahead and lookbehind in region
start and end regular expressions to support things like closing quotes
that aren't preceded by backslashes.