Java Edition 13w37b

13w37b was released to fix some of the bugs and crashes in the 13w37a snapshot.

Fixes
3 bugs fixed

From released versions before 1.7
 * – Structures (witch huts, nether fortresses etc.) don't get saved with the world file

From the previous snapshot
 * – 2 portals overlaying each other does not render correctly
 * – Exception with /give command