v0.3.2

• #29 - @andrewsomething - Prepare v0.3.2 release.
• #28 - @andrewsomething - Fix example by installing a server.
• #26 - @excid3 - Specify auth_scheme: :request_body for oauth2 v2.x compatibility
• #27 - @andrewsomething - Add explicit dependency on multi_json
• #24 - @Firefishy - GH action: simplify ruby bundler caching
• #23 - @andrewsomething - Document the information returned in the auth hash.
• #21 - @andrewsomething - Update Sinatra example for omniauth 2.0