add 1% threshold in codecove yml

[jeromedockes]

this should reduce noise of checks failing with "+- .01%" diff coverage etc.
1% is the value used by scikit-learn

[codecov]

Codecov Report

Merging #2434 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2434   +/-   ##
=======================================
  Coverage   92.30%   92.31%           
=======================================
  Files         180      180           
  Lines       23693    23721   +28     
  Branches     2824     2828    +4     
=======================================
+ Hits        21871    21897   +26     
- Misses       1186     1187    +1     
- Partials      636      637    +1     

Impacted Files	Coverage Δ
nilearn/input_data/nifti_labels_masker.py	92.07% <0.00%> (-1.54%)	⬇️
nilearn/stats/first_level_model/design_matrix.py	90.90% <0.00%> (ø)
...learn/input_data/tests/test_nifti_labels_masker.py	100.00% <0.00%> (ø)
nilearn/plotting/img_plotting.py	89.01% <0.00%> (+0.25%)	⬆️

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[bthirion]

Thx.

[emdupre]

Is it worth also including the comment from sklearn about using the browser extension ?

# Note The coverage stats are still uploaded
# to codecov so that PR reviewers can see uncovered lines
# in the github diff if they install the codecov browser
# extension:
# https://github.com/codecov/browser-extension

[emdupre]

Small, non-substantive question. But regardless, I think this will make a big difference to the contributor experience ! Thanks !!

[jeromedockes]

Is it worth also including the comment from sklearn about using the browser extension ?

I think it may be outdated; I can see coverage reports online and I haven't installed any extension

[emdupre]

You're right; I think it's outdated !

I remembered using the extension at some point (I think I installed it on an older computer), but it looks like it's totally deprecated, now. Maybe worth an issue in sklearn :)