- Added extra robustness and internal tests to make sure there are no stale entities.
- Fixed nan entity killing error.
- Fixed entity limits sometimes exceeding due to mobstacker improper sync. (Fix MobStacker sync with entitylimiter)
- Fixed stale entities on chunks sometimes reaching limits for no reason.
- Improved performance by doing progressive active cleaning of stale data.
- Pre-cancellation of spawning of entities to increase performance further.
- Temporal protection of items dropped to avoid them deleting suddenly.
