Yay! I won’t edit my comment (so your comment will make sense) but I checked and they also list they/them on their github profile

I’ll say the developer is also very responsive. They’re (ambiguous ‘they’, not sure of pronouns) active in a libraries-fighting-bots slack channel I’m on. Libraries have been hit hard by the bots: we have hoards of tasty archives and we don’t have money to throw resources at the problem.