Use date range for the license copyright

[Baptouuuu]

Fix #4

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.63%. Comparing base (da46fcb) to head (e39d724).
⚠️ Report is 6 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop       #8   +/-   ##
==========================================
  Coverage      92.63%   92.63%           
  Complexity       100      100           
==========================================
  Files             15       15           
  Lines           1209     1209           
==========================================
  Hits            1120     1120           
  Misses            89       89           

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