Java Edition Alpha v1.0.3

Alpha 1.0.3 added ambient cave noises and sounds for mobs.

Additions

 * Monster sounds (Before this, they made the sound of the player getting hurt.)
 * Ambient cave noises

Changes

 * The pathfinder now works for hills. Except for spiders.
 * Generally more convincing mob idling behavior. They’ll stand still more, looking around at their surroundings