PERF: Move cov-nw import

[bashtage]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.53%. Comparing base (3688e81) to head (a59aa87).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #820      +/-   ##
==========================================
- Coverage   99.53%   99.53%   -0.01%     
==========================================
  Files          78       78              
  Lines       15795    15794       -1     
  Branches     1290     1290              
==========================================
- Hits        15722    15721       -1     
  Misses         39       39              
  Partials       34       34              

Flag	Coverage Δ
adder	99.49% <100.00%> (-0.01%)	⬇️
subtractor	99.49% <100.00%> (-0.01%)	⬇️

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