* Slightly reduce X-height by 0.01em foe better geometric balancing.
 * Make low-crossbar variants of `f` more distinctive with `crossbar-at-x-height` (#1254).
 * Add Fira Code V6's progress bar symbols.
 * Add BLACK FOUR POINTED STAR (`U+2726`) and WHITE FOUR POINTED STAR (`U+2727`).
 * Add MATHEMATICAL LEFT FLATTENED PARENTHESIS (`U+27EE`) and MATHEMATICAL RIGHT FLATTENED PARENTHESIS (`U+27EF`).
 * Add Hookless variants for `r` (#1255).