Operations fields

[p1c2u]

More operations fields:

• summary
• description
• externalDocs
• security
• servers

Fixes #163

[codecov]

Codecov Report

Merging #169 into master will increase coverage by 0.11%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #169      +/-   ##
==========================================
+ Coverage   96.54%   96.65%   +0.11%     
==========================================
  Files          67       71       +4     
  Lines        1706     1763      +57     
==========================================
+ Hits         1647     1704      +57     
  Misses         59       59

Impacted Files	Coverage Δ
openapi_core/schema/external_docs/models.py	100% <100%> (ø)
openapi_core/schema/servers/models.py	100% <100%> (ø)	⬆️
openapi_core/schema/security/models.py	100% <100%> (ø)
openapi_core/schema/specs/factories.py	100% <100%> (ø)	⬆️
openapi_core/schema/servers/generators.py	100% <100%> (ø)	⬆️
openapi_core/schema/operations/generators.py	100% <100%> (ø)	⬆️
openapi_core/schema/security/factories.py	100% <100%> (ø)
openapi_core/schema/operations/models.py	100% <100%> (ø)	⬆️
openapi_core/schema/external_docs/factories.py	100% <100%> (ø)
... and 3 more

---

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 4c4636a...c4d4ed8. Read the comment docs.