Reconnectible Chains

Added

• Blocks hung on a chain now have their own collision box (configurable).

Changed

• Rewrote how chain collisions work to not use janky entities.
• Chain collisions are now enabled by default.

Fixed

• Mobs can now pathfind through chains with collision.
• Numerous performance improvements.
• Fixed lighting turning black when chain knots are covered by blocks.
• Blocks can no longer be hung on a chain where they would clip into the world.
• Blocks can no longer be placed into the space occupied by a block hung on a chain.
• Fixed hung animated blocks not being animated.