Switch to poetry

[p1c2u]

Drops python 2.7 and 3.5 support

[codecov]

Codecov Report

Merging #27 (0b212fc) into master (03786f6) will decrease coverage by 8.69%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #27      +/-   ##
==========================================
- Coverage   71.19%   62.50%   -8.70%     
==========================================
  Files           6        6              
  Lines         184      184              
  Branches        0       39      +39     
==========================================
- Hits          131      115      -16     
- Misses         53       54       +1     
- Partials        0       15      +15     

Impacted Files	Coverage Δ
openapi_schema_validator/_validators.py	48.33% <0.00%> (-13.34%)	⬇️
openapi_schema_validator/shortcuts.py	75.00% <0.00%> (-12.50%)	⬇️
openapi_schema_validator/_format.py	58.82% <0.00%> (-7.06%)	⬇️
openapi_schema_validator/validators.py	94.11% <0.00%> (-5.89%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 03786f6...0b212fc. Read the comment docs.