#179: Drop Python v3.6 support

• Remove Pytest v3.6 job
• Bump minimum Python in pyproject.toml
• Bump pyupgrade to --py37-plus
• Update documentation

Close #179 (closed).

changed milestone to %1.1.0

added Py ≥ 3.7 label

requested review from @vtexier

assigned to @moul

approved this merge request

added 3 commits

• a0ab6736...16e1be4c - 2 commits from branch main
• 328705c6 - [mod] #179 (closed): Drop Python v3.6 support

Compare with previous version

enabled an automatic merge when the pipeline for 328705c6 succeeds

merged