Bukkit

#2735 (Beta) -> #2754 (Beta)

• Seperated Lower.Safe from Lower.PreventFalldamage.
• Fixed bug in Handler and HandlerTickTask which would prevent it from working with certain configurations.
• Optimized EnumSet away, now using Arrays. Might use up to 100 bytes more per world, depending on your filter.
• Optimized Handler to skip a few calls to methods not really needed. Should make servers with many users faster.