Support OpenAPI v3 - GSOC

[ioggstream]

I expect

This repo supports OpenAPI v3

Instead

Just supports Swagger v2

Notes

• [x] syntax validation of current tests #92 @aymen94
• [x] familiarize with io-utils and basic oas3 parsing #74
• [x] identify a strategy for supporting both Swagger 2 and OAS3
• [x] create tests for OAS3
• [x] basic OAS3 support - proof of concept
• [x] implement OAS3 basic
• [x] define all other tests
• [x] implement all the remaining tests and be consistent with the older ones

This is for Google Summer of Code

[ioggstream]

Ciao @cloudify, this is one of the gsoc tasks, can you pls label it?

Plus, edit it wherever you like! Thx++. R.

[ioggstream]

@aymen94 to use OAS3 you need a more recent version of swagger-parser@6.0.5. Ensure that old tests work with that!

[aymen94]

@ioggstream ok, now I try

[jacopocarlini]

news for this feature?