Compact mode - Sidebar trigger distance settings

[djekanovic]

Hey!
I've just installed Zen browser and i love how it looks, i have a quick suggestion for the sidebar when it's in compact mode: a setting that would let us change the distance/pixels from the edge that will trigger showing the sidebar, basically to make it appear sooner if we want without needing to go to the full edge of the browser, but slightly sooner. I think it would be a cool option to have.

Thanks