GoodMC: Old Combat & Blockhitting

FIX: Balanced melee damage taken by mobs. (Damage taken increases as the game difficulty increases)

FIX: Armor durability now drains properly when No Armor Toughness is turned on

FIX: Sword blocking now properly slows the player down.

FIX: Implemented rendering compatibility with mods such as JEI, Jade, etc.