Edit codecov to skip abstract functions/properties

[Benardi]

Edit codecov to skip abstract functions/properties

Fixes #49

Type of change

Please mark options that are relevant.

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Checklist:

• [x] I did follow the contribution guidelines
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes

[codecov[bot]]

Codecov Report

Merging #50 into master will increase coverage by 0.45%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #50      +/-   ##
==========================================
+ Coverage    99.3%   99.76%   +0.45%     
==========================================
  Files          11       11              
  Lines         434      430       -4     
==========================================
- Hits          431      429       -2     
+ Misses          3        1       -2

Impacted Files	Coverage Δ
touvlo/supv/lin_rg.py	100% <0%> (+2.08%)	:arrow_up:

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