Magma Core v2.2.0

What's Changed

• GH 59 add create enumerated class method by @twalmsley in #60
• Add Rdf*Service classes to enforce rdf:type predicates by @twalmsley in #62
• Gh 50 create valid hqdm things by @twalmsley in #68
• Gh 67 more general query methods by @twalmsley in #71
• Gh 72 use iri not hqdmiri by @twalmsley in #75
• Gh 73 add enumerated class by @twalmsley in #74

Full Changelog: v2.1.0...v2.2.0