Java Edition 15w35a

15w35a is the fourteenth snapshot released for 1.9.

Changes

 * Zombies
 * Zombie villagers now have different textures based on their profession and career.
 * Command Blocks
 * Now have an option of "Needs Redstone" or "Always Active."
 * "Needs Redstone" is the previous behavior.
 * "Always Active" causes the command block to always behave as if it was powered.
 * New textures for command blocks.
 * Darkened outlines on the center shapes.
 * The back of the arrow texture is now curved when the command block is set to conditional.
 * Combat
 * Shovel base attack damage reduced from 4.5 to 2.5.
 * Pickaxe attack speed reduced from 1.5 to 1.2.
 * Axe base attack damage reduced from 8 to 7.
 * Axe attack speed increased from 0.85 to 0.9.
 * This reduces the axe's single shot damage while keeping the sage per second largely the same.
 * Hoe attack damage is now always 1.
 * Hoe attack speed now increases by 1 every tier, starting at 1.
 * Optimization
 * Experimental performance enhancements.
 * Fix client memory leaks.