Not at the moment, no. I work on it when I feel like it, but that's maybe once a year at most. Since I don’t really use the app for anything myself, I never really feel any need to. I know this isn’t what you want to hear, sorry!
If you want to do development yourself, or if you know anyone who might be interested, it's all open source. As an easier option, if you know anything you want changed or any new feature, go to the agithub page and create an issue. No promises, of course, but that is where I keep my own notes as well. So the next time I do decide to work on this app, this is where I'll look for places to start. (If you say it to me here then I'll probably forget it in a few months)