Adding support for readOnly and writeOnly

[badcure]

No description provided.

[codecov]

Codecov Report

Merging #135 into master will decrease coverage by 0.09%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master     #135     +/-   ##
=========================================
- Coverage   95.83%   95.73%   -0.1%     
=========================================
  Files          56       56             
  Lines        1538     1549     +11     
=========================================
+ Hits         1474     1483      +9     
- Misses         64       66      +2

Impacted Files	Coverage Δ
openapi_core/schema/media_types/models.py	91.17% <100%> (+5.88%)	⬆️
openapi_core/schema/schemas/models.py	92.99% <100%> (+0.18%)	⬆️
openapi_core/validation/request/validators.py	100% <100%> (ø)	⬆️
openapi_core/schema/parameters/models.py	96.82% <100%> (ø)	⬆️
openapi_core/validation/response/validators.py	97.87% <100%> (ø)	⬆️
openapi_core/schema/schemas/factories.py	100% <100%> (ø)	⬆️
openapi_core/compat.py	55.55% <0%> (-44.45%)	⬇️

---

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[codecov]

Codecov Report

Merging #135 into master will increase coverage by 0.28%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #135      +/-   ##
==========================================
+ Coverage   95.83%   96.12%   +0.28%     
==========================================
  Files          56       56              
  Lines        1538     1549      +11     
==========================================
+ Hits         1474     1489      +15     
+ Misses         64       60       -4

Impacted Files	Coverage Δ
openapi_core/schema/media_types/models.py	91.17% <100%> (+5.88%)	⬆️
openapi_core/schema/schemas/models.py	92.99% <100%> (+0.18%)	⬆️
openapi_core/validation/request/validators.py	100% <100%> (ø)	⬆️
openapi_core/schema/parameters/models.py	96.82% <100%> (ø)	⬆️
openapi_core/validation/response/validators.py	97.87% <100%> (ø)	⬆️
openapi_core/schema/schemas/factories.py	100% <100%> (ø)	⬆️
openapi_core/schema/schemas/exceptions.py	86.53% <0%> (+3.84%)	⬆️

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 75840e0...d369076. Read the comment docs.

[badcure]

Note: I create #136 to address the CI failure. Python 3.4 is no longer supported, the final release was in April.

[phrfpeixoto]

This allows a given schema to be both readOnly and writeOnly at the same time.

[p1c2u]

Closing the PR in favor of #152