[mtfishman]

Summary

prime, noprime and sim now take the indices to act on, as a collection or a lone index, or a predicate to choose them. prime also takes a prime-level increment, so prime(a, 2, i) raises i by two levels and prime(a, -1) lowers every index by one.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.49%. Comparing base (882e825) to head (8cfcaf6).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #274      +/-   ##
==========================================
+ Coverage   82.36%   82.49%   +0.13%     
==========================================
  Files          21       21              
  Lines        1474     1485      +11     
==========================================
+ Hits         1214     1225      +11     
  Misses        260      260              

Flag	Coverage Δ
docs	34.90% <73.33%> (+2.34%)	⬆️

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