* Requires python >= 3.5, adds type hints to call_api method
* Adds type hints to files_parameters and __call_api
* Adds and uses a new json encoded to prepare data before it is sent
* Removes nose name from gitlab testing invocations
* Also updates travis to py>=3.5
* Collapses encoder back into sanitize_for_serialization
* Removes future from python-exp v3 sample
* Removes future from python-exp v2 sample
* Deletes future from remaining python-exp files
* Removes six from python-exp templates
* Removes six from python-exp samples
* Removes mock from python-exp
* Python-exp switched to py3
* Removes python 2.7 for python-exp ci testing
* Requires python>=3.3 for python-exp
* Reverts unnecessary changes to two templates
* Adds oneOf + anyOf schemas, models and tests to python-experimental
* Adds setUpClass and tearDownClass
* Removes newline in method_init_shared.mustache
* Regenerated v3 spec sample for python-experimental
* Fxes test for discard_unknown_keys
* Moves new models into existing spec, regen python-exp and go-exp
* Also fix python-exp windows file
* start implementation of HTTP signature
* add api key parameters for http message signature
* HTTP signature authentication
* start implementation of HTTP signature
* add api key parameters for http message signature
* HTTP signature authentication
* HTTP signature authentication
* start implementation of HTTP signature
* fix merge issues
* Address formatting issues
* Address formatting issues
* move python-experimental-openapiv3-sample to a separate PR
* Add support for HTTP signature
* Add code comments
* Add code comments
* Fix formatting issues
* Fix formatting issues
* Fix formatting issues
* add code comments
* add code comments
* fix python formatting issues
* Make PKCS1v15 string constant consistent between Python and Golang
* fix python formatting issues
* Add code comments in generated Python. Start adding unit tests for HTTP signature
* compliance with HTTP signature draft 12
* compliance with HTTP signature draft 12
* working on review comments
* working on review comments
* working on review comments
* working on review comments
* working on review comments
* working on review comments
* working on review comments
* working on review comments
* working on review comments
* fix python formatting issues
* fix trailing white space
* address PR comments
* address PR comments
* address PR comments
* Add suppport for '(expires)' signature parameter
* address PR comments
* address PR comments
* Fix python formatting issues
* Fix python formatting issues
* Starting to move code to dedicated file for HTTP signatures
* Continue to refactor code to dedicated file for HTTP signatures
* Continue to refactor code to dedicated file for HTTP signatures
* Continue to refactor code to dedicated file for HTTP signatures
* Continue to refactor code to dedicated file for HTTP signatures
* move method to ProcessUtils
* conditionally build signing.py
* move method to ProcessUtils
* Code reformatting
* externalize http signature configuration
* address PR review comments
* address PR review comments
* run samples scripts
* Address PR review comments
* Move 'private_key' field to signing module
* Move 'private_key' field to signing module
* code cleanup
* remove use of strftime('%s'), which is non portable
* code cleanup
* code cleanup
* code cleanup
* run sample scripts
* Address PR review comments.
* Add http-signature security scheme
* Run sample scripts for go
* Fix issue uncovered in integration branch
* Fix issue uncovered in integration branch
* Fix issue uncovered in integration branch
* Fix issue uncovered in integration branch
* Run samples scripts
* move http signature tests to separate file
* move http signature tests to separate file
* unit tests for HTTP signature
* continue implementation of unit tests
* add http_signature_test to security scheme
* add unit tests for http signature
* address review comments
* remove http signature from petapi
* Add separate OAS file with support for HTTP signature
* Add support for private key passphrase. Add more unit tests
* Add unit test to validate the signature against the public key
* remove http signature from petstore-with-fake-endpoints-models-for-testing.yaml
* fix unit test issues
* run scripts in bin directory
* Refact unit test with better variable names
* do not throw exception if security scheme is unrecognized
* change URL of apache license to use https
* sync from master
* fix usage of escape character in python regex. Fix generated python documentation
* write HTTP signed headers in user-specified order. Fix PEP8 formatting issues
* write HTTP signed headers in user-specified order. Fix PEP8 formatting issues
* http signature unit tests
* Fix PEP8 format issue
* spread out each requirement to a separate line
* run samples scripts
* run sample scripts
* remove encoding of '+' character
