Update for OAuth

[scottlovegrove]

Any plans to update this to support the OAuth support that was (to me) recently added?

https://api-docs.letterboxd.com/#auth

It looks like the API has been properly opened up now, and just needs OAuth support in your client to make it usable with those changes.

[erunion]

Though the API docs are public it doesn't like the API is fully public yet per https://letterboxd.com/api-beta/. I didn't know they finally added OAuth support though so that's very exciting! Will look into this.