Use date range for the license copyright

[Baptouuuu]

Closes #3

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.17%. Comparing base (b56dc5e) to head (7988574).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop       #5   +/-   ##
==========================================
  Coverage      93.17%   93.17%           
  Complexity       118      118           
==========================================
  Files             19       19           
  Lines            425      425           
==========================================
  Hits             396      396           
  Misses            29       29           

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