Start on 1.6 work. Horses spawns. Packets updated. Health now use a float. Walk/fly speed is currently wonky. Created SadledCreatureProtocol (May get removed in the future). Created SaddledAnimal for both pig & Horse. Some temporary fixes in wolf,WitherEntityProtocol & ScoreboardListener

Signed-off-by: William Lebel <lebelwilliam@gmail.com>
Added Horse Armor, Horse saddle, hay bale, leash, carpet. They do nothing yet. Carpet can be placed. Deleted SaddledCreatureProtocol.
Fixed some missing float around. Walk/fly speed back to normal.
All the 1.6 protocol changes implemented (Mostly in the codecs/messages, not the actual gameplay)

Signed-off-by: William Lebel <lebelwilliam@gmail.com>