moving to pytest and github actions

[matthewtownson]

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[codecov]

Codecov Report

Merging #71 (69b55a6) into master (ae49c17) will decrease coverage by 0.76%.
The diff coverage is 66.66%.

❗ Current head 69b55a6 differs from pull request most recent head 2194c60. Consider uploading reports for the commit 2194c60 to get more accurate results

@@            Coverage Diff             @@
##           master      #71      +/-   ##
==========================================
- Coverage   92.57%   91.80%   -0.77%     
==========================================
  Files          25       42      +17     
  Lines        1319     2014     +695     
==========================================
+ Hits         1221     1849     +628     
- Misses         98      165      +67     

Impacted Files	Coverage Δ
test/test_centroiders.py	100.00% <ø> (ø)
test/test_circle.py	100.00% <ø> (ø)
test/test_infinitephasescreen.py	46.15% <ø> (ø)
test/test_opticalprop.py	88.09% <ø> (ø)
test/test_phasescreen.py	100.00% <ø> (ø)
aotools/fouriertransform.py	74.07% <64.28%> (-2.85%)	⬇️
aotools/turbulence/slopecovariance.py	98.27% <100.00%> (ø)
aotools/image_processing/centroiders.py	98.33% <0.00%> (-1.67%)	⬇️
aotools/turbulence/profile_compression.py	80.32% <0.00%> (-1.64%)	⬇️
aotools/turbulence/infinitephasescreen.py	85.80% <0.00%> (-0.10%)	⬇️
... and 18 more

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