Additional normalization of requirements

[sbidoul]

No description provided.

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (867f296) 7.63% compared to head (ecbb8e8) 7.62%.

❗ Current head ecbb8e8 differs from pull request most recent head c8310c7. Consider uploading reports for the commit c8310c7 to get more accurate results

Files	Patch %	Lines
src/pip_deepfreeze/utils.py	0.00%	2 Missing ⚠️
src/pip_deepfreeze/sync.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #132      +/-   ##
=========================================
- Coverage    7.63%   7.62%   -0.01%     
=========================================
  Files          17      17              
  Lines        1061    1062       +1     
  Branches      221     221              
=========================================
  Hits           81      81              
- Misses        968     969       +1     
  Partials       12      12              

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