Added: .gitignore and .gitattributes
Added: Use PircBotX and Args4j in pom
Updated/Fixed: Fixed and updated lots of things (see below)

Firstly, I've moved CAHBot over to PircBotX, the performance-enhanced and better-written fork of PircBot.
Because of this, listeners have been moved over to CAHListener.java (to simplify code).
I also added CLI argument support. The descriptions aren't exactly finished at this point.
I removed Timer and replaced it with ScheduledThreadPoolExecutor. This is for a future project in CAHBot.
I made lots of things protected for use in CAHListener.
Card pack support was added. The first, second, and third version are included, and so are the first, second, and third expansions.
I fixed some things like using equals() on objects that weren't compatible.
Moved some messages and commands to private messages to reduce spam.
Probably some other things I missed while skimming through the diffs.

Sorry about this long commit message!
Added: New card packs!

Included:
The First, Second, and Third Official Versions
The First, Second, and Third Official Expansions