0.2.2: :rocket: Add sphinx and deploy to readthedocs.io (#13)
* :rocket: Add sphinx and deploy to readthedocs.io * :pencil2: Add newer python classifiers * :bug: Amend docs.txt for 3.6+ * :rotating_light: Run pytest on src and tests only * :bug: Amend ci.txt for 3.6+ * :bug: Explicitly point to tests/ * :bug: Unpin pytest