chore: prepare for 7.0.0 release (RDFLib#2512)

chore: prepare for release 6.3.2 (RDFLib#2315)

chore: prepare for release 6.3.1 (RDFLib#2285)

Update everything to reflect release version 6.3.1.

chore: prepare for release 6.3.0 (RDFLib#2276)

Update the changelog and other parts to prepare for the 6.3.0 release.

This will be tagged to 6.3.0.

Prepare for 6.2.0 release (RDFLib#2023)

This should bring master branch to a point where we can tag and publish
6.2.0.

Co-authored-by: Edmond Chuc <37032744+edmondchuc@users.noreply.github.com>

final tidying commit for 6.1.1

Merge pull request RDFLib#1517 from aucampia/iwana-20211218T0100-test…

…_guidelines

Update the guidelines for writing tests

6.0.2 release docco RDFLib#2

version set to 6.0.1

blacked everything