Java Edition 13w09b

13w09b was released fix some of the bugs and crashes in the 13w09a snapshot. It was also the first version to include Minecraft Realms.

Additions

 * Added an /effect command
 * Command: /effect [seconds] [amplifier]
 * Maximum number of seconds are 1,000,000
 * Amplifier increases level of the chosen status effect
 * Maximum number for [amplifier] is 4
 * Added Minecraft Realms
 * Only added to few randomly chosen players
 * Exactly 100 players were chosen
 * Feature is accessed through button in the Menu screen

Fixes
20 bugs fixed

From released versions before 1.5.1
 * – crowdin.net: Entry entity.WitherBoss.name is missing – German translation is "Withern"
 * – Self-Powered Redstone Lamp / Breaking a repeater with a piston pointing at a block won't stop the circuit
 * – Potatoes are not affected by the Fortune enchantment
 * – Items with NBT data do not stack correctly due to serialization
 * – Named tools/armor disappearing from inventory
 * – Infinite Duriation Bug
 * – /clear with command blocks not working with armor that has been worn with custom damage values.

From the 1.5.1 snapshots
 * – Cannot Drop Items in Creative Mode
 * – Texturepacks no longer work
 * – Rail Duplication glitch
 * – World crashes after a few seconds
 * – blocks keep the redstone state when breaking a comparator that powers that block
 * – Pistons can't destroy comparators
 * – Crash with 512x texture pack
 * – Fortune doesn't affect the drop rate of apples and saplings
 * – "Pick Block" on certain items then switching to survival creates infinite or ghost items
 * – When removing "Ghost Items" from the inventory, the number may be negative or zero

From the previous snapshot
 * – GUI text is messed up when changing textures / Block & item textures replaced by letters or other textures
 * – Pressing Single or Multiplayer Button crashes the game
 * – Mining Fatigue broken