Remove plain numpy array as argument option

[mwcraig]

Fixes #866

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---

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.96%. Comparing base (781adbd) to head (b7a32bb).
Report is 13 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #867      +/-   ##
==========================================
- Coverage   98.04%   97.96%   -0.08%     
==========================================
  Files           9        9              
  Lines        1379     1379              
==========================================
- Hits         1352     1351       -1     
- Misses         27       28       +1     

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