skpkg: recut with 0.1.0 scikit-package

[ycexiao]

What problem does this PR address?

recut diffpy.pdffit2 with scikit-package=0.1.0

[ycexiao]

@sbillinge, it's ready for review.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.97%. Comparing base (d6541e9) to head (8bd0cc1).
⚠️ Report is 4 commits behind head on migration.

Additional details and impacted files

@@            Coverage Diff             @@
##           migration     #143   +/-   ##
==========================================
  Coverage      98.97%   98.97%           
==========================================
  Files              6        6           
  Lines           1267     1267           
==========================================
  Hits            1254     1254           
  Misses            13       13           

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[sbillinge]

thanks!