v0.5.0-alpha.0

This is a simple release aimed mainly at having a working KotStom version for the 1.21.7 game jam.

What's Changed

• fix: publish to Sonatype repository by @oglassdev in #12
• 1.21.7 by @oglassdev in #16

Full Changelog: v0.4.0-beta.0...v0.4.0-alpha.0