pep639 license

[valeriupredoi]

Description

Closes #176

As pointed out during the JOSS paper review - with many thanks!

Before you get started

• ☝ Create an issue to discuss what you are going to do

Checklist

• This pull request has a descriptive title and labels
• This pull request has a minimal description (most was discussed in the issue, but a two-liner description is still desirable)
• Unit tests have been added (if codecov test fails)
• Any changed dependencies have been added or removed correctly (if need be)
• If you are working on the documentation, please ensure the current build passes
• All tests pass

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.83%. Comparing base (653181b) to head (defda34).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #180   +/-   ##
=======================================
  Coverage   76.83%   76.83%           
=======================================
  Files          15       15           
  Lines        2936     2936           
  Branches      467      467           
=======================================
  Hits         2256     2256           
  Misses        558      558           
  Partials      122      122           

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[valeriupredoi]

I sped merged this one, apologies @Zeitsperre - but it was a really wee one 😃