I did finish what I thought would be a decent update, complete with an action extension, but Apple rejected it when I submitted it for review. Their objection was for something completely unrelated to what had changed since 3.2.
At this stage I’m not clear what the path forward is. I do not want to end support for it — it’s an app that I still use myself — but it’s difficult to justify the magnitude of change they’re asking for at the the moment.
So I’m afraid I don’t have an answer right now but thought I should document what the hold-up is. More information when I have it.