54a9ccb1a5
Adds top-edge and bottom-edge parameters to the font function. These define how the box around a word is computed. The possible values are: - ascender - cap-height (default top edge) - x-height - baseline (default bottom edge) - descender The defaults are chosen so that it's easy to create good-looking designs with vertical alignment. Since they are much tighter than what most other software uses by default, the default leading had to be increased to 50% of the font size and paragraph spacing to 100% of the font size. The values cap-height and x-height fall back to ascender in case they are zero because this value may occur in fonts that don't have glyphs with cap- or x-height (like Twitter Color Emoji). Since cap-height is the default top edge, doing no fallback would break things badly. Removes softness in favor of a simple boolean for pages and a more finegread u8 for spacing. This is needed to make paragraph spacing consume line spacing created by hard line breaks.