Update README.md

Merge pull request #2 from fabriziomiano/dependabot/pip/lxml-4.6.2

Bump lxml from 4.3.2 to 4.6.2

update requirements

Update README

Set theme jekyll-theme-modernist

Set theme jekyll-theme-midnight

beautify docstrings

fix imports; fix mongo client connection; apply pep8 guidelines

nuances

fix imports. beautify docstrings

remove unused imports

apply pep8 + flake lint

update parso as per dependency security alert

update requirements