Bukkit

• Added two new boss abilities: shuffle-positions and flood. Try them out!
• Players disconnecting/crashing during an arena session no longer get corrupted data files due to economy rewards.
• Weapon durability is now correctly set to "unlimited".
• Item sub-types (cocoa beans, bonemeal, colored wool, etc.) now work again.
• Players can no longer join the arena without first picking a class.
• MobArena now works with spawn-monsters=false again.

Redstone circuits seem to be broken inside of arenas. (Fixed in latest dev build)