Code review comment for lp:~3v1n0/unity/callgrind-improvements

> + nux::Point3 rotation;
>
> Why did you do it?

We had 3 floats instead that needed manual initialization (both in renderer and in Launcher), and that didn't allow to do equality check easily (in PreprocessIcon).
Using a nux::Point3 is just smarter and allows to do the same things better.