* Fix format

- run the formatter on .formatter.exs
- remove paren from func def having no args

* Update deps

- Allow minor version upgrade
- Update dev/test dep

* Fix typo

* Support multiple response types

Authorization URI and token fetching should support the multiple response types
that each provider supports. In addition, this library should include some verification
of the requested response types.

* Perf: only sort discovery document keys when fetching, not on each token request

* Deprecation of old  argument format

* Normalize response_type

This allows overriding document attributes on a per-request basis. It's necessary when doing
incremental authorization, where an app needs to generate multiple authorization uris with different
scopes.

* Allow missing claims_supported

* Added test case for missing claims_supported

* Fixing travis