What's Changed
* use correct root for jsonschema by cmungall in https://github.com/linkml/linkml-model/pull/80
* adding structured patterns, adding ranking by cmungall and ddooley in https://github.com/linkml/linkml-model/pull/79
* sha256-in-datasets by cmungall in https://github.com/linkml/linkml-model/pull/81
**Full Changelog**: https://github.com/linkml/linkml-model/compare/v1.0.7...v1.2.0rc3