Java Edition 12w40b

12w40b was released to fix some of the bugs and crashes in the 12w34a snapshot.

Additions

 * Added a way to teleport a player relative to their current coordinates.
 * Use ~ to represent current position and then + or -.
 * For example, "/tp (player) ~+500 ~-5 6.13" teleports adds +500x, -5y, and moves the player to 6.13z.

Fixes
3 bugs fixed


 * Fixed the glitchy block popping bug.
 * Fixed beacon rendering.
 * Fixed a crash related to map items in strongholds.