skpkg: update project to latest scikit-package template

[danielsirakov]

I ran package update and updated the project to the latest sci-kit package template. Let me know if all changes look appropriate or if there's anything else I should add.

@cadenmyers13 ready to review

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.27%. Comparing base (0b16bfd) to head (68dc573).
⚠️ Report is 3 commits behind head on v3.3.0.

Additional details and impacted files

@@            Coverage Diff             @@
##           v3.3.0     #190      +/-   ##
==========================================
+ Coverage   79.08%   81.27%   +2.19%     
==========================================
  Files          25       25              
  Lines        3821     3798      -23     
==========================================
+ Hits         3022     3087      +65     
+ Misses        799      711      -88     

see 3 files with indirect coverage changes

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[cadenmyers13]

@danielsirakov Thanks for this. Looks good

[cadenmyers13]

@sbillinge ready for review