This is incredible, it's amazing to see this all running in the browser. One nag, I didn't actually know I could scrub on the tabs until I clicked - have you t

This is incredible, it's amazing to see this all running in the browser. One nag, I didn't actually know I could scrub on the tabs until I clicked - have you thought about adding a grey-like highlight on hover? Either with the same bar or highlighting the notes under the mouse?