Setting `expiration` to never still requires user approval every time

[btzc]

👋 Hey! We've noticed that setting expiration to never still requires the user to give approval every time even if we already have their access token. We looked at the personal settings and found that no new access token is created and the access token being returned by the omniauth call is the same as what we have stored.

We weren't sure if maybe we had misunderstood the documentation or are just using the gem incorrectly so I figured I'd try and open an issue.

  provider :trello, 'TRELLO_CONSUMER_KEY', 'TRELLO_CONSUMER_SECRET', app_name: 'My App', scope: 'read,write,account', expiration: 'never', callback_path: '/auth/trello/callback'

is the provider that we've added to our omniauth.rb file. Any help would be greatly appreciated!

Thanks a ton!