Input methods for changing durations in ToneLib Jam

Hello,
First and foremost, I'd like to thank the crew at ToneLib for your amazing products, and also thank you for Linux support. You guys rock!

There is only one thing that I'd say is missing in ToneLib Jam: being able to control note duration with +/- keys (or any other keys). That way I can use my Right hand on the number pad to input the notes/change their duration and keep my left hand on the arrow keys, so I can quickly move around the tab. So I'd like to leave this feature suggestion here, I can't speak for others, but I know I would greatly appreciate it.

Once again, thanks for the great software. I'll definitely be recommending to my friends, and I've already recommended them to my band mates. Cheers!