#41 Menu/keyboard items to toggle preference settings

[Brian J. Johnson]

I find it helpful to switch the "Ignore white space differences" and "Show line numbers" preferences on and off, depending on the details of the files I'm comparing. Currently, this requires dropping down a menu, opening up the preferences, clicking the checkbox, and clicking "OK": 4 mouse clicks. It would be helpful if there were menu items or keyboard accellerators for doing this more quickly.

Thanks!