text: Title: Add support to Python 3.9+
  Body: It does not work. No errors, no warnings, no tests running.
  
  ```
   pytest --picked
  
  Changed test files... 0. []
  Changed test folders... 0. []
  Test session starts (platform: darwin, Python 3.9.10, pytest 6.2.5, pytest-sugar 0.9.4)
  django: settings: dmp.settings (from ini)
  rootdir: /Users/hipertracker/dev/app, configfile: pytest.ini
  plugins: Faker-11.3.0, picked-0.4.6, xdist-2.5.0, forked-1.4.0, html-3.1.1, django-3.10.0, sugar-0.9.4, metadata-1.11.0, notifier-1.0.4, testmon-1.2.2
  collecting ...
  
  Results (0.01s):
  ```
  
  pip freeze > requirements.lock.txt
  
  ```
  ...
  pytest==6.2.5
  pytest-django==3.10.0
  pytest-forked==1.4.0
  pytest-html==3.1.1
  pytest-metadata==1.11.0
  pytest-notifier==1.0.4
  pytest-picked==0.4.6
  pytest-sugar==0.9.4
  pytest-testmon==1.2.2
  pytest-watch==4.2.0
  pytest-xdist==2.5.0
  python-dateutil==2.8.2
  ```
  
  ```
  $ python -V
  Python 3.9.10
  ```
  