Update codecov

[ewu63]

Purpose

This PR does the same thing as mdolab/pygeo#99:

• no longer install package in place
• run tests in the test directory instead of the root.

Type of change

What types of change is it? Select the appropriate type(s) that describe this PR

• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (non-backwards-compatible fix or feature)
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no API changes)
• [ ] Documentation update
• [x] Maintenance update
• [ ] Other (please describe)

[codecov[bot]]

Codecov Report

Merging #60 (58e7d35) into master (1e1d6a5) will decrease coverage by 0.32%. The diff coverage is 33.33%.

@@            Coverage Diff             @@
##           master      #60      +/-   ##
==========================================
- Coverage   46.13%   45.80%   -0.33%     
==========================================
  Files           6        6              
  Lines         776      751      -25     
==========================================
- Hits          358      344      -14     
+ Misses        418      407      -11     

Impacted Files	Coverage Δ
idwarp/MultiUnstructuredMesh.py	8.23% <0.00%> (-0.38%)	:arrow_down:
idwarp/UnstructuredMesh.py	61.03% <40.00%> (-0.93%)	:arrow_down:

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[marcomangano]

@nwu63 is this ready to be merged?

[ewu63]

@nwu63 is this ready to be merged?

Yep, I just didn't wanna do it without all the required reviews.