Pocket Edition v0.9.0 alpha build 5

v0.9.0 alpha build 5 is the fifth build version released for v0.9.0.

Changes

 * Loading textures in the background to avoid hiccups at runtime
 * Tall grass is not flammable anymore
 * Added a recipe for Emeralds
 * Compiled LevelDB with more optimizations
 * Somewhat faster torch placing
 * Improved (again) block breaking particles
 * Optimized rendering of particles
 * Flat worlds can now be customized by editing the options.txt file

Fixes

 * 9 bugs fixed
 * Fixed Multiplayer
 * Fixed a crash in Explosion
 * The sky doesn't become dark anymore when swimming/exploring shallow caves
 * Fixed water not creating obsidian when generated with the world
 * Fixed incorrect light updates
 * Fixed TNT not rebuilding graphics
 * Fixed TNT not exploding other TNT
 * Can now spawn Redwood trees from spruce sapling
 * Fixed black faces on fences, doors and trapdoors next to walls