Pocket Edition v0.13.0 alpha build 4

v0.13.0 alpha build 4 is the fourth build version released for v0.13.0.

Skin packs

 * : Biome Settlers Pack 1 Skin Pack.

Changes

 * Block lag significantly reduced
 * Updated the textures of all doors in the inventory
 * Ghasts and slimes now have a higher spawn rate
 * Tripwire outputs power when broken with anything other than shears

Fixes

 * Localized the "New" button
 * Skeletons now burn during daytime
 * Fixed apples inflicting poison
 * Minecarts placed on a powered rail next to an opaque block will now move in the right direction
 * Fixed detector rails saving their ON/OFF state incorrectly