Entity Culling Unofficial

• Fixed bug where infinite bounding boxes could crash the collusion thread (it was a surprise to me this could even happen, yet here we are).
• Added 'aggressive mode' to configuration options, off by default.
• Made 'debug mode' more useful in debugging issues.

Initial port of the 1.8 version (under MIT) to 1.7.10.

• Ported the mod.
• Switched some mixin functionality to use a registry instead for added compatibility benefits.