v0.5.1: export Event.Unmarshal, bump minimum Go version to 1.21

What's Changed

• Make Event.Unmarshal method public. by @npinaeva in #39
• Bump minimum Go version to 1.21 by @ti-mo in #40

New Contributors

• @npinaeva made their first contribution in #39

Full Changelog: v0.5.0...v0.5.1