Jamie Peabody

React stack nav has a dependency on the old way PropTypes was bundled. Using react 16.x causes an exception: ``` Uncaught TypeError: Cannot read property 'object' of undefined at eval...

Note #2 is missing an update to the [CHANGELOG.md](https://github.com/APIDevTools/openapi-schemas/blob/master/CHANGELOG.md) - it still says 2.0.0. Actually, it's missing a number of [patch versions](https://www.npmjs.com/package/openapi-schemas?activeTab=versions) too.

Resolves #94. Adds support for multiple [Media Type Object](https://swagger.io/specification/#request-body-object) content body. Previously, if `requestBody.content` defined multiple content types, e.g. `application/json` and `multipart/form-data`, then only `application/json` would be used to validate...