Use generic syntax in pyproject.toml vs poetry specific

[olirice]

resolves #156

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.77%. Comparing base (e1f78f2) to head (cfaee47).

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Additional details and impacted files

@@           Coverage Diff           @@
##           master     #157   +/-   ##
=======================================
  Coverage   99.77%   99.77%           
=======================================
  Files          17       17           
  Lines         870      870           
=======================================
  Hits          868      868           
  Misses          2        2           

Flag	Coverage Δ
unittests	99.77% <ø> (ø)

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[notatallshaw]

Looks good to me!

There is also a standard way to define dependency groups (dev groups etc.), but Poetry doesn't support this yet so you can't migrate to them: python-poetry/poetry#9751