Concurrent Chunk Management Engine

C2ME 0.3.4.0 for Minecraft 1.21.8 is released

Fixing bugs and improving performance.

Changelog:

• new: fully threaded scheduling This change removes the need for a scheduler thread and makes ping-pongs between worker threads and the server thread less frequent, which should lower the chunk system latency primarily for Windows users and bring a slight throughput per core improvement to all users.
• change: aggressively unload and avoid loading unneeded chunks by default
• change: make stacktraces in errors after multiple retries more readable
• fix: race condition in handling chunk busy state
• fix: client movement on misbehaving servers
• fix: avoid fog color view distance overflow on large render distances
• fix: UpgradeData serialization in gcFreeChunkSerializer