What's Changed
* chore: updated docs in https://github.com/ViAchKoN/dataclass-sqlalchemy-mixins/pull/28
* fix: support relationships as string in https://github.com/ViAchKoN/dataclass-sqlalchemy-mixins/pull/29
**Full Changelog**: https://github.com/ViAchKoN/dataclass-sqlalchemy-mixins/compare/v0.3.0...v0.3.1