In a previous version I remember being able to click a chip multiple times on the bottom hotbar to add more at once in a nice block. This feature was super nice for keeping things neat and organized. I can't seem to do it anymore, has it been changed or removed completely?

I think it is (at least temporarily) removed.

I mean he has rebuilt this thing from scratch, so I think that probably wasn't his priority at the time.

Yes this is a feature I forgot about when rewriting! I'll add it back in a future update.

I didn't realize it was rebuilt completely, you've done an outstanding job. Thank you so much for providing a useful and fun tool!