* Support python 3.7 for all server-generators
Signed-off-by: Guillaume Smaha <guillaume.smaha@gmail.com>
* Rename typing_patch.py to typing_utils.py
* Renaming typing_patch.mustache to typing_utils.mustache
* Fix comparaison in typing_utils.is_dict for python3.7
* Issue 1766 Modified mustache files for Go to support nullable in the spec v3.0+; Updated model files running .sh scripts for Go.
* Add "nullable" to fake yaml
* Add sample script for OAS3
* Fix output folder (openapi3)
* Run bin/openapi3/go-petstore.sh
* Update samples
* Update jaxrs-jersey
* Update python and php samples
* Add bin/openapi3/go-gin-petstore-server.sh
* Run bin/openapi3/go-gin-petstore-server.sh
* Update bin/openapi3/go-petstore-server.sh to generate "nullable" samples
* Run bin/openapi3/go-petstore-server.sh
* Fix duplicated `import`
