This is a Beta pre-release. Issues may occur! It is recommended to wait for a more stable version, or to try it out on a separate test server!

1.21 support was just added so issues are very likely!

• Removed more NMS Utils and deprecated more of them for future removal
  • The goal is to go NMS-Less in the near future, and rely on NMS via third-parties like Item-NBT-API only!
  • CustomCrafting will need a few more updates to remove its reliance on NMS
• Improved the NMS Fallback to further support versions without NMS implementations
  • I tested 1.21 a bit and so far no issues.
  • 1.21 still uses the fallback with reflections
• Fix Player Head Textures in latest mc versions
• Fix MMOItemsStackIdentifier type serialization
• Don't upgrade Particle Enum on pre-1.20.5
• Fix invalid NMS package for pre-1.20
• Fix Persistent Storage Error on chunk unloading

Full Changelog: v4.17-beta.3...v4.17-beta.4