Middle Mouse Button Rotate Please

[Sasuga]

I've been using Logitech to do it, but have a new computer and am tired of setting it up.

If we could have the middle mouse button rotate objects, the game can be played without a keyboard. I do it all the time, or did before.

I may get the will power to setup the logitech settings again, but if you could simply add this feature, it'd be nice for everyone.