* Since the addition of the normalised UV co-ords the status bar will
flicker in width horrendously when scanning over a texture and it's
impossible to track where you are. Even worse, if the text is wide
enough (or the window narrow enough) you'll end up with the status
bar flickering between one and two lines - which is awful.
* For now I've added some padding for numbers and set a fixed width font
so the only varying element is the actual texel value, which is
unavoidable in the general case. The text is probably wider overall
so I'll need to see what feedback I get.