Java Edition 13w10a

13w10a is the fourteenth snapshot released for Java Edition 1.5.

Blocks

 * Detector rails
 * Added activated rail texture.

Mobs

 * Slimes
 * Spawn rates in swamps now depend on the current moon phase.

Fixes
22 bugs fixed

From released versions before 1.5
 * – Unicode font text shadow misaligned.
 * – Grass fades under upside-down stairs (except oak wood ones).
 * – Activated detector-rails moved by a piston keep their activated state.
 * – Single player mode, creative mode, E to select block, select block from grid, E to return to game, game freezess, crash log created.
 * – Furnace tile entities reproducing - Internal performance bug.
 * – Last direct Multiplayer connection does not get saved.

From the 1.5 snapshots
 * – Redstone block and torches don't power dispensers, droppers, TNT and noteblocks.
 * – Adding an item to a hopper with a dropper does not change comparator state.
 * – Faceless furnace/furnace duplication glitches.
 * – Extending piston animation missing.
 * – Piston retracting disappears if pushed out by another piston.
 * – Issues with baby cows' hitboxes.
 * – Unicode defined font in texture pack is misfunctional.
 * – Hard crash when trying to load a custom world.
 * – Comparator doesn't update when a hopper takes in only part of an item stack.

From the previous snapshot
 * – Hopper cool-down is messed up.
 * – Piston arm passes through other piston.
 * – Hoppers facing one another are inconsistent.
 * – Slowness 127 and Speed 110 together flip view.
 * – Using /clear on more than 1 player will stop clearing inventories once an empty inventory is encountered.
 * – cannot use   correctly.
 * – Updated redstone bug (detectorrail).
 * – "" error message says " " instead of the team's name.