add codecov token to fix coverage issue #34

[cpauvert]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (8f2a7dd) 93.42% compared to head (87e81a3) 96.71%.
Report is 3 commits behind head on main.

❗ Current head 87e81a3 differs from pull request most recent head ffcb2b5. Consider uploading reports for the commit ffcb2b5 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #35      +/-   ##
==========================================
+ Coverage   93.42%   96.71%   +3.28%     
==========================================
  Files          14       14              
  Lines         487      487              
==========================================
+ Hits          455      471      +16     
+ Misses         32       16      -16     

Files	Coverage Δ
R/merge_processed_spectra.R	100.00% <100.00%> (+14.28%)	⬆️

... and 1 file with indirect coverage changes

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