Feature request: show list of previously visited comment sections

[justbispo]

Something similar to #106, but for the comment section.
Maybe my use case is too specific, but I find myself trying to find something I previously read, either a comment or an article, but can't remember in which post I read it. I also don't know how important that comment is until I need it, so I don't always add it to my favorites.
Adding a place where I can check the past comment sections I opened would really help this.
Also, the app already saves the history since it shows the link title in gray, so it should be a bit easier to implement.