Lithium 0.12.1 for Minecraft 1.20.3

Lithium 0.12.1 is the first release for 1.20.3.

You can check out all configuration options at description of all optimizations here.

Full Changelog: mc1.20.2-0.12.0...mc1.20.3-0.12.1

Additions

• Very experimental item entity optimizations (disabled by default for now)
• Caching of block class analysis, reducing startup times