Add in bulk

I read comics, so every month I get a new stack of books with ISBNs. I'm sure people who are members of music or book clubs also get many items of media all at once. Adding these things to Listal is easy, but not super easy. Right now I have to type in each ISBN, one at a time. Is it possible to make a page that lets me add many items at once? I'm sure this would also be useful for new users who have to input their existing collections.

Another thing. After I enter an ISBN it says "item successfully added". However, I'm always left worrying if I entered the right item. It would be very helpful if the page showed me what items I just added, so I can be sure I didn't mess up and add something else. Of course, if I add in bulk, I want to see everything I just added.