Prepare 0.2.1 release

[clarasb]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.57%. Comparing base (d45aa38) to head (5d7cfa6).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #146   +/-   ##
=======================================
  Coverage   93.57%   93.57%           
=======================================
  Files          91       91           
  Lines        1665     1665           
  Branches      262      262           
=======================================
  Hits         1558     1558           
  Misses         91       91           
  Partials       16       16           

Flag	Coverage Δ
backend	100.00% <100.00%> (ø)
frontend	87.70% <ø> (ø)

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