Efficiently moving things around in zig-zag Graphics buffer visualized w/ 24/32 bpp displays / neopixel strings

Ahh - then I'll try and get those positions modified.

The space saving may not be entirely required I guess but it's easy for things to get out of control. Also the Graphics lib uses a slightly odd way of storing that data (in a String, copied into a flat memory area for each gfx call) so the less data there is, the faster it'll run.