Chest Cavity 2.12.0

Additions:
-Knockback Resistant ability grants .1 knockback resistance per rank
-Iron Repair restores 25% of the user's health upon consuming iron or iron scrap, up to ability rank times per minute
-Furnace Powered lets users consume fuel items for hunger restoration over time, can burn one item at a time per rank
-Piston Muscles grant Good Strength, Poor Speed, and Launching
-Golem Plating grant Exceptional Defense, Reduced Metabolism, and Iron Repair
-Inner Furnaces grant Pathetic Defense, Pathetic Metabolism, and Furnace Powered
-Golem Cables grant Good Defense, Poor Nerves, Reduced Speed, and Knockback Resistant
-Golem Cores grant Average Health, Poor Nerves, and Knockback Resistant
-Iron Golems now contain the above organs
-The above organs salvage for Iron Scrap, which can be smelted into iron nuggets

Bugfixes:
-Blaze Shells gave too much defense
-Withers contained entire evil constellations
-Servers would sometimes refuse clients access
-Clients couldn't see tooltips in servers
-Forbidden slots were not forbidden