Happy new year!

At last! 2014 is here, and I'm a month late. Oh well.

This time, we've got a few changes:
- Method format conformation
- JavaDoc!
- Subscriptions

Method format conformation:
Method / constructor declarations (but not enums or annotations) now no
longer have a space between the method name and parameters. For
example, we'd now have doSomething() instead of doSomething ().

JavaDoc:
I'm about halfway through documenting the source code.

Subscriptions:
Subscriptions are a cool new developer feature. A plugin can subscribe
to a certain event and receive a chance to add data to that event when
it is stored and add data back to the restored change when the change
is rolled back. So, for example, if a horse plugin stores meta about
its rider, it can store the data as the horse dies and re-apply it to
the horse as Tracker rolls it back.