What changed in Minecraft 15w49a

Key	Text
commands.particle.invalidParam	Invalid param given (%s)
item.modifiers.chest	When on body:
stat.aviateOneCm	Distance by Elytra
subtitles.block.generic.hit	Block breaking
subtitles.entity.arrow.hit_player	Player hit
subtitles.item.chorus_fruit.teleport	Player teleports

Key	Before	After
commands.particle.usage	/particle <name> <x> <y> <z> <xd> <yd> <zd> <speed> [count] [mode]	/particle <name> <x> <y> <z> <xd> <yd> <zd> <speed> [count] [mode] [player] [params]
subtitles.block.dispenser.dispense	Dispensed items	Dispensed item
subtitles.block.water.ambient	Water splashes	Water flows
subtitles.entity.bat.hurt	Bat hurt	Bat hurts
subtitles.entity.blaze.ambient	Blaze crackles	Blaze breathes
subtitles.entity.shulker.hurt	Shulker awaits	Shulker hurts
subtitles.entity.wither.spawn	Wither prepares	Wither released
subtitles.item.flintandsteel.use	Fire whooshes	Flint and steel click