MC Plugin Upgradeable Spawners ⭕ Spawner Levels Plugin ✅ Entity Stacking, Butcher - 1.20 Support 4.12.5

Let your players upgrade their spawners!

- Fixed: [#2151] Not being able to disable period_amount upgrade by setting period time to 0
This should also fix spawning issues with servers, having that set to 0.

+ Added: [Suggestion] Option to cancel vanilla spawners spawning entities

+ Added: [Suggestion] Option to blacklist AI removal

- Fixed: Entity type name not applied in main menu from entities.yml
- Fixed: [#2089] Unknown message for teleportation progress

- Fixed: Incompatibility with executable items

+ Improved: Evaluation of spawn location when no-conditions enabled

+ Improved: Spawner saving procedure

This change is experimental. I'm not able to test compatibility with all 3rd party plugins that exist.

+ Improved: Spawn event handling
Entities are no longer spawned pre spawn, no need to .remove it if cancelled

+ Added: API: getSpawner
+ Improved: Compatibility with entity stacking plugins
- Fixed: Minor issue with no-conditions leaving one spawn in edge cases

+ Changed: Adjust spawn height for spawn task
- Fixed: Error at filtering player