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

...instead of grouped I should have said bundled... (adjacent lines in the source).

for reasons of having unconditional structure accessible as one, contiguous block, incl. cursor pos - (https://github.com/espruino/Espruino/blob/master/libs/graphics/graphics.h#L69, though may not be of interest.