add WCS dep

[icweaver]

and some other misc. cleanup

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.10%. Comparing base (6690e94) to head (6038146).
⚠️ Report is 18 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #233      +/-   ##
==========================================
+ Coverage   90.78%   92.10%   +1.32%     
==========================================
  Files           7        7              
  Lines         705      722      +17     
==========================================
+ Hits          640      665      +25     
+ Misses         65       57       -8     

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