Congrtulations, it seems really easy to use.
Just one thing: I noticed formatting changes (such as italics) are ignored. Is this deliberate?
Having said that, adding an option to include formatting changes is on our roadmap.
However, when you're a professional copy editor of non-fiction publications, a substantial part of your work will consist of checking little details, such as making sure the titles of books, magazines, and articles are formatted correctly and so on.