Supports 1.21.5 - 1.21.7. Chat links may not be clickable as Kyori libs have not updated yet.

- Removed mentions of paste.gg/debug as that third party service no longer exists and it was confusing users.
- Fixed infinite loop error on paper when rolling back mobs. Chicken/cow/wolf rollbacks won't work on paper due their API divergence but it at least won't spawn infinite and spam the logs anymore.
- Fixed NPE when item action is canceled.

V4 is in beta now, and beta2 is coming soon with a release candidate likely soon after. V3 will be supported - such as it is - until v4's release.