Switch to ReadTheDocs and versioning to automatic

[jmbhughes]

Closes #165

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.54%. Comparing base (fb0097f) to head (7226f3e).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #169   +/-   ##
=======================================
  Coverage   95.54%   95.54%           
=======================================
  Files          15       15           
  Lines        1009     1009           
=======================================
  Hits          964      964           
  Misses         45       45           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.