Add regression tests

[not-an-aardvark]

It would be nice to not have to worry about breaking everything when making changes.

It's probably not necessary to set up a local IRC channel for this -- since the irc module exports an EventEmitter, we can probably emit events manually to spoof incoming IRC messages.

[AlMcKinlay]

2 things that'll make this easier:

1. My node irc server that I'm writing
2. The sqlite support that I've written and will put up a PR for once Update config to have better sections #85 is merged

Then we can get a nice bunch of tests and this would make things like #85 much easier to test in the future.