Awsome work. I like it. Two things I think it COULD use is scrolling view with mouse and right click instead of shift... just so I would never have to use more then the mouse.
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O oh gotcha. And yes, I think I'm unclear as well, you can indeed move the camera around the map with middle mouse button as well. Holding the middle mouse button down and dragging the map around. But I like your suggestion to also do the near edge movement which I can't think of any reason not just to have them all as options :D