Java Edition 12w16a

12w16a is the second snapshot released for 1.3.1.

Additions

 * Added a demo mode for non-premium users (won’t be available until the full update).
 * In the language files, new text was added for the demo mode. The demo mode will last for 6 in-game days (about 1 hour and 40 minutes) according to the language files. It also teaches the player how to use the controls and how to begin playing.
 * Added bonus chest option to create world screen.
 * When enabled, starts the user off with a chest nearby containing tools, items, and blocks helpful to starting a survival game. Bonus chests may contain:
 * Wood
 * Wood Planks
 * Sticks
 * Stone and/or Wooden Pickaxe
 * Stone and/or Wooden Axe
 * Bread
 * Apples
 * Added option to enable single-player commands to create world screen.
 * Added several commands: /gamemode, /toggledownfall, /time, /give, /xp, /kill.
 * Typing / then pressing will show a list of available commands.
 * These commands are enabled in previously generated creative mode-worlds.
 * While using commands, the world around the player is frozen, unlike in multiplayer.

Changes

 * Updated language files.
 * Items can now be deleted from the hotbar by shift-clicking while on the Creative mode item selection screen.