Java Edition 12w21a

12w21a is the sixth snapshot released for 1.3.1.

Additions

 * Trading
 * Villagers will buy or sell the player emeralds in exchange for certain items
 * Trade with villagers by right-clicking on them, opening up a GUI with 2 buying slots and one selling slot
 * Ender chest
 * Crafted with 8 obsidian and 1 eye of ender
 * All ender chests in a world have the same contents, if those contents change it will affect the contents of all other ender chests
 * On SMP, the ender chest's contents will be the same for all players on a server
 * Emerald
 * Used in villager trading
 * Emerald ore
 * Drops 1 emerald when mined
 * Generates in veins of up to 10 blocks
 * Desert villages
 * Villages that generate in desert biomes will now be made of sandstone rather than wood and cobblestone
 * Desert temples
 * New generated structure in desert biomes that resemble pyramids
 * Have a TNT trap and loot chests inside
 * Enchanted golden apple
 * A second golden apple made with blocks of gold
 * After being consumed, the player receives 30 second regeneration IV, plus resistance and fire resistance for 5 minutes
 * Sandstone stairs
 * Have the same function and recipe as other stairs, but made of sandstone
 * Commands
 * Displays the current world seed
 * Displays the current world seed

Changes

 * Creative
 * Added snow to the creative inventory
 * Minecarts
 * While sitting inside of a minecart pushing the directional keys will make it move the direction you are pressing, this will only work while the minecart is sitting on rails
 * Buckets
 * Are now stackable
 * Sky
 * Stars are more realistic
 * They are now slightly smaller and slightly brighter
 * Gravel
 * Changed gravel texture
 * Options
 * Improved Options menu
 * Dispensers
 * Dispensers will eject water and lava source blocks from buckets
 * Will also take water and lava source blocks if there is an empty bucket inside
 * Boats
 * Boats will now pass through lily pads without breaking the boat; the lilypad drops as an item instead.
 * Passive mobs
 * Passive mobs can be easily pushed around by simply walking, most likely intended to help the player navigate through animal farms more easily
 * Singleplayer
 * Removed Server Jar dependency in Single Player
 * Locked chest
 * Removed old chest texture, causing locked chests to appear as the purple default block