Major preformance improvements
Merge pull request #31 from humanity/preformance-improvements

Major preformance improvements
Nothing much of substance, but it's got a question in *04Join
Add Server->Client player update system
Incremental -- WILL NOT COMPILE YET
Remove RemovedPlayersList because it was duumb
Clean up, clean up, everybody clean up!

Actually--this fixes the bugs that were made by the last commit.
Remove some unused packet that no one cares about
Remove AbstractMaskedPacket because it was crappy.

Conflicts:
	server/src/main/java/net/humanity_game/server/packets/AbstractMaskedPacket.java
Do some things, maybe?
Fix "getting" the Packet04Join packet twice on client