Feature request: Ability to include/exclude specific file formats

[davel23]

I've been finding more books being released in .cbt format, which seems to have highly efficient compression but Perfect Viewer on Android doesn't support the format so they're pretty much useless to me. There's an option in Mylar's configuration to only download just .cbr or just .cbz files which I assume would bypass .cbt, but I'd rather not limit my choice between those two formats just to eliminate the third.