TODO

✔ Remove dependency on decorators
✔ Synchronized should be a mixin
✔ Behavior items should derive type/name
✔ Precompile behavior traversals
✔ Abstract physics world tick optimizations
✔ Cache current routine for Behaved tick
✔ Apply patches to matter.js ( https://github.com/liabru/matter-js/pulls?utf8=%E2%9C%93&q=is%3Apr+author%3Abchevalier )
✔ Inline traits into entity, remove Proxy
✔ Eliminate immutable.toJS()
✔ Track dirty entity state (entityList.tick())
✔ Investigate visibleEntities path
✔ Investigate lookupEmitListeners path
✔ Investigate visibleBoundingBoxes path
✔ EventEmitter::emit is too hot
✔ Entity packets
✔ Decouple input normalization from action registry
❌ entityList.fromJSON()
❌ Socket WebWorker can't connect in Firefox
✔ Don't run emitter destruction tickers on server
❌ Investigate unrolling equalsClose
✔ Bitshifts for on_positionChanged x/y boxing
❌ Memoize Object.getOwnPropertyNames results per trait constructor
✔ EE optimizations (lookupEmitListeners)
❌ Core.fastApply, search for /(.../
✔ Rename visibleBoundingBox(es)? to visibleAabb(s)?
❌ Property.fastAccess to skip getter, this.entity.currentAnimation
✔ Trait::isDirty should be flat
❌ Trait params fromJS is super slow
❌ Entity::is is slow?