Hi,

My paths are not being validated correctly with the new mux router.

Seems like the problem is here https://github.com/getkin/kin-openapi/blob/master/routers/gorillamux/router.go#L59

Any reason to not use the encoded path originally?

e.g.:

/my/pa%2Fram/path should match the route /my/{param}/path but it does not.