Allow for mouse wheel scrolling to be converted to up/down arrows for tmux/screen/vim copy mode

[Nbelles]

It would be really nice to have a way to use external mouse scroll wheel or trackpad scrolling to simulate up/down (maybe even left/right) arrow key presses. Maybe a toggle in the settings window to switch between normal window scrolling behavior and simulated key presses.

Thanks!

[Dhyaeng]

Strongly agree