Java Edition 12w21b

12w21b was released to fix some of the bugs and crashes in the 12w21a snapshot.

Changes
Locked Chest
 * Creative
 * New inventory screen in Creative
 * Blocks and items are sorted by category, each category in its own tab, the categories are: Building Blocks, Decoration Blocks, Redstone, Transportation, Miscellaneous, Foodstuffs, Tools, Combat, Brewing and Materials
 * The inventory can be searched for specific items: just start typing while in the inventory screen. The search results will be displayed in the Search Items tab
 * The player's survival mode inventory is accessible via a tab with the chest as its icon
 * Brewed potions will not be included in their own category
 * To close the new inventory window you must press 'Esc'. Using the default inventory key does not currently work
 * Added monster egg to Creative inventory
 * Armor
 * Chainmail armor is now available in survival mode via trading
 * F3 debug screen
 * The F3 menu no longer has the graphs
 * Chunks
 * Saving and loading chunks is slightly faster
 * Emerald ore
 * Texture changed from Removed Ruby Ore.png to Emerald Ore.png
 * Locked Chest's texture changed with an addition emerald texture.

Reupload
12w21b was reuploaded later on May 25, 2012 to fix translation griefings.