Bukkit

+Now uses the sidebar Scoreboard game feature to show player scores during a match.
+added a few schematics for the /newarena feature
+fixed some errant Null Pointer Exceptions occuring with some tasks.
+Soft dependency on GriefPrevention for creating arena borders. GP currently breaks Mob spawning for unknown reasons.
It also rewrites all the Randomization data to a YML file, this is in preparation for a move to support YML format for the randomization data, rather than a 'special' format text file. Data is not yet loaded from this file, however.

Scoreboard feature sticks around after a match, which can be annoying. Other parts also seem to create scoreboards for seemingly random reasons.