Multi-valued aud claim not supported

[SSMKittel]

Disclaimer: I do not use this project, just happened to stumble upon it and see a potential issue (one that I had seen previously when dealing with JWTs in another language).

RegisteredClaims has audience as an Option<String>, however the JWT spec states it can also be an array of values
eg both of these are valid, but the code looks like it only handles the first case:

{ "aud": "a" }
{ "aud": [ "a", "b", "c"] }

[glimberg]

I'm running into this issue myself. Will see if I can figure out a PR for it

[kulak]

It would be nice if fix is merged. I am having to add forked version to my references.