`uqa-core` is the UQA Engine crate for document sets, finite-support relations, posting storage, and value types.
Applications should depend on `uqa-engine` or `uqa-client`. See the [repository README](https://github.com/cognica-io/uqa-engine) and the [manual](https://github.com/cognica-io/uqa-engine/blob/main/docs/manual/README.md).