The way I wrote it is a bit of a quick fix with a lot of code duplication, I'm sure it could be implemented in a cleaner way (e.g. having only one remove_files method that can either take a single path or a list of paths).
It's one of those things that I intended to do at some point, but never had the time to clean it up (I did a similar modification for adding lists of files, since this has exactly the same issue if you don't want to add something you can define with a wildcard but only specific files).
If you're up for it, feel free - I'm sure there are plenty of people who would appreciate it.