Bump version to 0.12.0

[gutzbenj]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.68%. Comparing base (ae6c893) to head (760d6b8).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #67   +/-   ##
=======================================
  Coverage   84.68%   84.68%           
=======================================
  Files           7        7           
  Lines        1208     1208           
=======================================
  Hits         1023     1023           
  Misses        185      185           

Flag	Coverage Δ
unittests	84.68% <ø> (ø)

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