Aether Expansion

-Added a bunch of mp code.
-Bukkit build for Aether Expansion released (including bukkit events and working sounds)!
-Due to some bugs with bukkit and some limitations, the following features are not implemented in the bukkit port:
Unholy Sword entity poison effect (still causes lightning).
The player will no longer be able to hit another entity with any of the Healing Staffs if they are on cooldown or have insufficient durability.
If the player attacks an entity with the Flaming Gemstone equipped, there is now a 1 in 20 chance of the entity being set on fire for 8 seconds (as long as the entity being attacked isn't another player).
-Changed default entity IDs in config (would recommend changing them yourself or regenerating config, if you try to log in to the server without doing this you will crash).
-Fixed an issue where the player would not receive a message when their sentry shield was ready if they didn't use the ability again after unequipping it while it was ready and then re-equipping it.
-Fixed some more jank code for the Hammer of Jeb.
-Fixed some Hammer of Jeb logic.
-Fixed some bugs with the double ore drops with the Hammer of Jeb and Lucky Pendant.
-Fixed Gravitite Ore not logging in stats.
-Even more code optimizations.
-Fixed an issue where accessories were deleted when the player died. This is an Aether bug but I decided to fix it. If you don't like the idea, you can disable it in the config. If it is enabled, accessories will drop like any other item when the player dies.
-Healing Staff can damage players again.
-Removed extended reach from the Unholy Sword (I put it there for testing and forgot to remove it).
-Cleaned up entity classes.
-Optimized packets.