OptionaleccOptionalinvertedFlip light/dark for white-on-black terminals (default false).
OptionalquietLight border in modules on every side (default 2).
Optionalsmalltrue (default): two module rows per text line using half-blocks (▀▄█), half the height of classic full-block renderers. false: double-width full blocks for terminals with poor unicode support.
Error-correction level (default 'M').