Release 3.3.0

• Update documentation links to use gh-pages, and add action to publish gh-pages from Yard docs.
• Improve comparison of time/date values.
• Update method signature for queries.
• Updates for version 3.3.0 with minimum Ruby version 3.0.

Release 3.2.0

• Minimum Ruby version now 2.6.
• Spira#using_repository now returns the given repository
• active support and active model minimums now 6.1.
• Add i18n gem explicitly.

Release 3.1.1

• Updates for RDF 3.1 release and Ruby 2.7 calling sequences.
• always require rdf/vocab when requiring spira