feat: add experimental OpenAPI 3 support

Please see https://github.com/apiaryio/api-elements.js/blob/master/packages/fury-adapter-oas3-parser/STATUS.md for the list of supported features. The support of OpenAPI 3 in Dredd is experimental, beta, early, you name it. It is everything but finished. However, it already works - see apiaryio/api-elements.js#71 The OAS3 adapter is now developed publicly at https://github.com/apiaryio/api-elements.js/tree/master/packages/fury-adapter-oas3-parser and accepts contributions.

Close #894

Author: honzajavorek

README.md

@@ -27,6 +27,7 @@ documentation.
 
 - [API Blueprint][]
 - [OpenAPI 2][] (formerly known as Swagger)
+- [OpenAPI 3][] ([experimental](https://github.com/apiaryio/api-elements.js/blob/master/packages/fury-adapter-oas3-parser/STATUS.md), contributions welcome!)
 
 ### Supported Hooks Languages
 

docs/index.rst

@@ -23,6 +23,7 @@ Supported API Description Formats
 
 -  `API Blueprint`_
 -  `OpenAPI 2`_ (formerly known as Swagger)
+-  `OpenAPI 3`_ (`experimental <https://github.com/apiaryio/api-elements.js/blob/master/packages/fury-adapter-oas3-parser/STATUS.md>`__, contributions welcome!)
 
 Supported Hooks Languages
 ~~~~~~~~~~~~~~~~~~~~~~~~~

package.json

@@ -40,7 +40,7 @@
     "chai": "4.1.2",
     "clone": "2.1.2",
     "cross-spawn": "6.0.5",
-    "dredd-transactions": "6.2.6",
+    "dredd-transactions": "6.3.0",
     "gavel": "2.2.1",
     "glob": "7.1.3",
     "html": "1.0.0",