Changes

Fix a minor error in the health command

Woops, my bad!
Doesn't seem to be a disruptive error, just throws a stacktrace and
moves on (according to the user who found it)
 (commit: 67ce1da)

Fix a minor error with the Projectile Hits event

Arrows: Powered by dark magic.
 (commit: 914420d)

Add ItemPlantgrowth property

Plant growth is currently handled rather poorly by Bukkit...
nonetheless, here's a working property for it!
 (commit: 0c5cac5)

Automatically add plugins and execution jar in RuntimeCompiler

For some reason, it won't let you actually compile any .java files.
 (commit: 0c3d327)

Fix meta errors
 (commit: cf5f38c)

Add ItemBook property

After trying to figure out how to make the book info work without
creating weird errors with the pipe symbols and newlines, I decided to
use an HTML-style escape system for book meta.
Works extremely well!

- Also, fix some errors in RuntimeCompiler.
 (commit: 7d7f565)

Add speed argument to the shoot command

Because the default physics aren't all that impressive... shooting in an
arbitrary direction and speed is useful.
 (commit: 02cc12a)

Calculate particle effects correctly

the Effects enum sometimes acts like it has effects it doesn't... no
idea what's going on there, just give it a lowered priority under
ParticleEffect for now.
 (commit: 50e2f92)