2022-01-13 - v0.18.0 - Python 3.10 support, RDFLib v6.1.1

Added

• Added Python 3.10 support (when using RDFLib v6.1.1 or greater)
• Added more type hinting, to conform to the new type hinting added by RDFLib 6.1.1
• Added Python 3.10 to test suite

Changed

• Subtle correction in the way sh:prefixs works with sh:declare on the given named ontology.
• Bumped some min versions of libraries, to gain compatibility with Python 3.10

Fixed

• Fixed test for issue #76
• Fixed #76 again (after fixed test)