Only overload weighted canonical indexing, and fix case of matrix weight

[dlfivefifty]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.99%. Comparing base (6232e9a) to head (976b8f6).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #241   +/-   ##
=======================================
  Coverage   90.99%   90.99%           
=======================================
  Files          19       19           
  Lines        1744     1744           
=======================================
  Hits         1587     1587           
  Misses        157      157           

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