Is openapi 3.1.0 supported?

[LHolten]

This looks like a really cool project btw.

[ebastien]

Due to the limitations of crate openapiv3, we only support OpenAPI v3.0.x at the moment. To be honest, I would love to move past this limitation, but I must admit that I did not put too much time into the project recently. Any contribution is welcome!