A maubot that posts film ratings from Letterboxd.

Once you are subscribed, any new ratings will be posted in subscribed rooms along with cover art for the film.

Basic commands:

• !lb subscribe <username> - Subscribe to a Letterboxd feed for the given username.
• !lb unsubscribe <feed ID> - Unsubscribe the Letterboxd feed with the given ID.
• !lb subscriptions - List subscriptions (and feed IDs) in the current room.
• !lb notice <feed ID> [true/false] - Set whether the bot should send new posts as m.notice (if false, they're sent as m.text).