My Lenovo laptop (as well as the keyboard plugged in to my docking station) have keys that bind to front / back in a browser. Similarly, my mouse has 2 buttons that do that as well. On TextPad for windows, you can use those buttons to switch back and forth between files. Would be great to have that in Sublime as well.
updated 2 years ago
Mouse buttons are customizable in build 2046, and buttons 4/5 go to the next/prev file by default.