exports codes & parseMessage

[hnry]

Export codes & parseMessage ( the parser ) so users can have more access to them.

parseMessage was already exported, but users couldn't 'monkey-patch' it to use a different parsing method.

This was users can use their own parser with the help of codes or just simply modify the parser in a different way to their liking.

Has no backwards compat issues either.

[jirwin]

@LoveBear codes is already accessible by require('irc/lib/colors')? I perhaps exporting it fromindex.jswould be better so you couldrequire('irc').codes`.

As for parseMessages, I have a plan that would let you have more control over the parsing layer. I'll have that to show soon.

[jirwin]

@LoveBear Please take a look at #295 and let me know what you think

[hnry]

being worked on in #295