Begin stage for what is likely last set of semi-major rewrites:
    - Already replaced UV Spheres with low res ico spheres
    - Will add hooks for all renderers, including none at all
    - Viewport, camera indpendently controlled.
(For probably after Friday)
    - Group instancing, as well as textured instancing (maybe)
    - Animated color keyframes (maybe)
    - Parallel rendering (hopefully)