3.1.0

Changelog

• Add step by step introduction/tutorial to question pages.
• Add third party licence files.
• Update README.
• Dependency updates:
  • Update coverage from 5.1 to 5.2.1.
  • Update django-extensions from 2.2.9 to 3.0.8.
  • Update django-storages[google] from 1.9.1 to 1.10.
  • Update google-auth from 1.12.0 to 1.21.1.
  • Update google-cloud-logging from 1.15.0 to 1.15.1.
  • Update mypy from 0.770 to 0.782.
  • Update Pillow from 7.0.0 to 7.2.0.
  • Update psycopg2-binary from 3.0.4 to 3.2.1.
  • Update pydocstyle from 5.0.2 to 5.1.1.
  • Update pytest from 5.3.5 to 6.0.1.
  • Update pytest-django from 3.8.0 to 3.9.0.
  • Update pytest-sugar from 0.9.2 to 0.9.4.
  • Update Sphinx from 2.8.4 to 2.8.6.