algopenne

According to this part of the [Trakt API](https://trakt.docs.apiary.io/#reference/users/list-like/add-items-to-custom-list) this should be possible. It shouldn't be too hard, I'll try and figure it out.

For anyone looking in to this functionality, [I've implemented them in a fork available here](https://github.com/andrewchenk/trakt-csv-scripts). I'd also be happy to make a pull request for this repo, but it looks...

I will take a look at it. Thanks for reporting.