Minecraft Snapshot 13w06a

Minecraft released a new snapshot recently. This one is mainly bug fixes and a lot of them at that.  The official post can be found below at the link.  Copy and paste of the bug fixes is also listed.

http://www.minecraftforum.net/news/745-snapshot-13w06a-ready-for-testing/

--copy and paste--

Snapshot Bugfixes:
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The following items were corrected, test them and see!

• Some lighting optimizations, no bug fixes yet sorry :(
• Pigs constantly jumping, when player control them on half slabs and stairs.
• Z-fighting of iron bars / glass panes with the block below / above
• Leaves replace transparent blocks
• Clouds have a transparency when you are above/in them but not when you're underneath them.
• Baby mob collision boxes are too large.
• Village lamp post floating torches
• Corner Fence Has Incorrect Collision Box
• Wither skeletons have wrong hitbox
• Double Trapped chest, makes two sounds when opening and closing.
• No sound from some trapped chests
• Villager trade menu missing name
• Placing a block East of the Hopper makes the inside appear black
• Piston pushing piston bugs / piston duplicating piston
• Comparators do not update their output signal
• Team option "friendlyfire" is not saved to disk; resets upon map reload
• Scoreboard name duplication
• FallingSand support for block IDs > 128