Hsmodels

What's Changed
* 27- changes to relation and source models by pkdash in https://github.com/hydroshare/hsmodels/pull/28

New Contributors
* pkdash made their first contribution in https://github.com/hydroshare/hsmodels/pull/28

**Full Changelog**: https://github.com/hydroshare/hsmodels/compare/0.4.3...0.4.6

What's Changed
* remove required from key/value properties by sblack-usu in https://github.com/hydroshare/hsmodels/pull/26


**Full Changelog**: https://github.com/hydroshare/hsmodels/compare/0.4.2...0.4.3

What's Changed
* exclude empty strings from rdf graph parsing by sblack-usu in https://github.com/hydroshare/hsmodels/pull/25


**Full Changelog**: https://github.com/hydroshare/hsmodels/compare/0.4.1...0.4.2

What's Changed
* move rights out of in schemas for aggregations by sblack-usu in https://github.com/hydroshare/hsmodels/pull/24


**Full Changelog**: https://github.com/hydroshare/hsmodels/compare/0.4.0...0.4.1

What's Changed
* add aggregation "in" schemas by sblack-usu in https://github.com/hydroshare/hsmodels/pull/23
* allow later versions of pydantic by sblack-usu in https://github.com/hydroshare/hsmodels/pull/19


**Full Changelog**: https://github.com/hydroshare/hsmodels/compare/0.3.6...0.4.0

What's Changed
* Key value not required by sblack-usu in https://github.com/hydroshare/hsmodels/pull/22


**Full Changelog**: https://github.com/hydroshare/hsmodels/compare/0.3.5...0.3.6