Fixes hinting on some icons, implements drawing icons.
Fixes how 1s and 0s render for compile and debug instruction icons.
Implements GIMP-like drawing icons.
Revises rasterize.sh; no longer hard-codes icon names
Adds media control icon theme. Ignores existing.
Adds a visually consistent set of media control buttons.
Modifies rasterize.sh to skip icons already present in raster/.