Parsers For Chat Plugins

[edunham]

from a conversation in #bravo (https://gist.github.com/edunham/6856310)

---

< simpson>| * Plugin addressing for chat is very ad-hoc and fragile.
I'd like to have some sort of system where each chat plugin hands back
a parser, argparse-style, and we chain subparsers to parse chat. As a
bonus, this would let us also parse CLI commands and IRC commands the
same way. It'll require some elbow grease to bang argparse into
submission.