chore(main): release 0.4.0 (#6)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.4.0](https://github.com/aeimer/go-multikeymap/compare/v0.3.0...v0.4.0) (2025-01-28)
+
+
+### Features
+
+* supply concurrent an non-concurrent verions ([#5](https://github.com/aeimer/go-multikeymap/issues/5)) ([5178093](https://github.com/aeimer/go-multikeymap/commit/517809354a6f882e354c42bd4219ed49bdf31097))
+
 ## [0.3.0](https://github.com/aeimer/go-multikeymap/compare/v0.2.0...v0.3.0) (2024-11-23)