There are now more villager professions (only notable trade changes and additions listed)
White robe: Librarian (now buys stacked written books, can now offer different enchanted books)
Purple robe: Cleric (now only sells a single piece of redstone, sells lapis, buys ender pearls and rotten flesh)
Brown robe: Fisherman (buys string, coal, cooks normal fish, sells enchanted fishing rods), Farmer (no longer sells melons, buys melon blocks, pumpkins, potatoes, carrots, sells cake and pumpkin pie), Fletcher (buys string, sells bows, converts 10 gravel into 10 flint), Shepherd (sells colored wool)
White apron: Butcher, Leatherworker (buys leather, sells leather armor and enchanted leather armor)
Black apron: Armorer (Sells enchanted diamond armor, iron armor, chain armor), Tool Smith (sells enchanted iron shovel/pick and enchanted diamond pick), Weapon Smith (sells enchanted iron sword, enchanted diamond sword, enchanted diamond axe, iron axe)
The disabled trade arrow now has a descriptive tooltip
Can amend and modify the NBT data of the block at specified coordinates
Added optional arguments to /clear for max item count (use 0 to not delete anything) and NBT data
Blocks can no longer be placed or removed in Adventure mode
Exception: Tools obtained with /give can be modified to allow extraction of specific blocks, the tag needed to be used is CanDestroy (example: /give @p minecraft:diamond_shovel 1 0 {CanDestroy:["minecraft:sand","minecraft:grass"]} to give a Diamond Shovel that can break grass and sand). Items with this tag display the names of the blocks that they can destroy in the item tooltip
/clear can now be used to clear only a specific number of items and can be restricted to certain NBT data
Example: /clear @p 383 120 34 {display:{Name:Michael}} will remove up to 34 villager spawn eggs named Michael from yourself; Note: Maximum removal item count is not working correctly at this time
Added LockNBT tag to lock containers
Locked chests can be accessed by right-clicking with an item named the same as the string provided for the Lock tag
The lock can be completely removed utilizing the command /blockdata
Difficulty can be locked for each world
No more global difficulty option (can't change it if no world is loaded)
Relative teleporting no longer brings players to a stop; it preserves their velocity from before the teleport
Carrots restore 3 hunger points instead of 4
Baked Potatoes restore 5 hunger points instead of 6
Improved chat communication
Messages are now either chat, system or action bar messages
Action bar messages are always shown, chat and system messages are only shown if chat settings are configured that way
Some instances of usernames in the chat will now show the player's UUID when hovered on when debug tooltips are enabled
例子:/tellraw @p {text:"Daytime? ",color:"green",extra:[{text:"Click here!",color:"blue",clickEvent:{action:"run_command",value:"/time set day"}},{text:" Nighttime? "},{text:"Click here!",color:"blue",clickEvent:{action:"run_command",value:"/time set night"}},{text:" Have fun!"}]}