Major features

- Update Minecraft 1.21.8 (#3237)

Fixes

- fix: account for ChunkEntitySlices nullability (#3248)
- fix: we should just always clone the region in ApplyTask (#3249)
- fix: reimplement entity restore (//restore -e) (#3250)
- fix: pasting of colored signs (#3244)
- fix: some fixes to NMSRelighter (#3215)
- fix: occasional "SENDING\_CHUNKS stored lock does not equal lock attempted to be unlocked" (#3199)
- fix: attempt to retrieve online from offline player for perm attachments (#3182)
- fix: don't return null when slow applyBlock method is called by CoreProtect (#3185)
- fix: saving of blocks with tile entity data in FAST\_V3 (#3161)
- Don't require actor for block parsing (#3154)
- fix: update Discord announcement workflow to use correct release tag output (#3140)
- Properly relight surrounding chunks (#3147)
- Fix //hollow not behaving correctly(#3142)
- Fix offset mask mutating vector (#3135)
- fix: account for "wrapped" clipboards when finding IQueueExtent for OncePerChunkExtent (#3127)
- fix: fix extent traverser (#3126)

✨ Features

- feat: lazily resolve NBT on items (#3247)
- chore: remove MapManager + dependent features (#3246)
- Update for 1.21.6 (#3211)
- feat: implement "mutable" transform holder for random rotations (#3173)
- Update for 1.21.5 (#3172)
- feat: add upstream's trim command (EngineHub/WorldEdit#2278) (#3168)
- feat: add permission to allow default nbt (#3053)

✅ Chore

- Fully replace ThreadLocal in Request with CHM (#3251)
- chore: upstream merges (#3184)
- chore: improve performance of upstream's trim command (#3170)
- Improve #existing mask performance (#3171)
- Remove outdated version checks (#3153)
- chore: remove 1.21.3 (#3128)
- Inform when vector api is present but not used (#3139)
- Improve state applying pattern performance (#3149)
- Improve block category mask performance (#3148)