Release 0.0.2.
* Calculate subClass only over the base vocabulary, and those vocabularies which import it. (`RDF::Vocabulary.imported_from
* Be more forgiving if asking to entail something that's not the right vocabulary term.
* Ignore rdfs:Resource in range.
* Add support for Role class in domain_includes/range_includes.
* ISO 8601 regular expression matcher for schema:Date.
Allow plain literal if range expects an object.
Version 0.0.3.
Release 0.0.3.

* Allow plain literal if range expects an object.