<!-- Release notes generated using configuration in .github/release.yml at main -->
What's Changed
* update map check to check hashability to support None keys by ggmarshall in https://github.com/gipert/dbetto/pull/7
New Contributors
* ggmarshall made their first contribution in https://github.com/gipert/dbetto/pull/7
**Full Changelog**: https://github.com/gipert/dbetto/compare/v1.0.3...v1.0.4