Bukkit

- Fixed issues with arrows not dealing damage if they fail to capture their target.

- Added configuration file.

- Added Capture levels for stronger mobs.

- Added "legacy" game mode that ignores Capture levels.

- Added command /zoo legacy <on|off> to toggle this new game mode.

- Added Elastic arrows to bring the captured egg back to the player upon successful capture.

- Added "cleanser" recipes to erase the mob type from a spawner.

- Picks with Silk Touch enchant can retrieve mob spawners from the ground.

- Various minor performance improvements and code optimizations.

None.