Pytest-sort

What's Changed
* 🔌 Add decorators recommended by pluggy by WiredNerd in https://github.com/WiredNerd/pytest-sort/pull/8


**Full Changelog**: https://github.com/WiredNerd/pytest-sort/compare/v1.3.0...v1.3.1

What's New:
* 🎉 New mode "mutcov"

Full Differences: https://github.com/WiredNerd/pytest-sort/compare/v1.2.2...v1.3.0

Add link to [pytest-sort.readthedocs.io](https://pytest-sort.readthedocs.io/)

* Fix issue 4 by calling git rev-parse to get top level folder in 'diffcov' mode

Add new sort mode: diffcov

* Change Pony DB to JSON file