Doc and 2.2.0 changelog

2.1.5 changelog

2.1.4 changelog

2.1.2 changelog

2.1.1 added pyproject.toml

Fixed autoeq in case of attributeerror

2.0.0 changelog

1.18.0 changelog

 - Added `__version__` attribute

 - Not using pytest-cov anymore: bug
 - simplified setup.py thanks to markdown-enabled long description

to use the latest pytest we need also the latest pytest cov