Java Edition Alpha v1.0.3

Alpha v1.0.3 is a version released to add new sounds and to change the behavior of mobs.

Mobs

 * General
 * Added hostile mob sounds.
 * Prior to this update, they shared the player's hurt sound.

World generation

 * Caves
 * Added ambient sounds.

Mobs

 * General
 * Pathfinding has been improved on hills
 * Only exception is for spiders.
 * Generally more convincing mob idling behavior.
 * They stand still more often, looking around at their surroundings.