- Update to 6.12:
* Increase right side bearing of math italic R’s (#304).
* Add glyph variants for floor and ceiling, to make their sizing
consistent with other delimiters.
* Remove kerning and other glyph positioning features, combining
marks and other non-keycap glyphs from Libertinus Keyboard font.
* Fix size and shape of U+2639, U+263A and U+263B (frowning &
smiling faces).
* Add “smcp”/“c2sc” variants for letters with macron (#303).
* Make U+2223-2226 the same height as bar (#324).
* Drop “sinf” feature, it just duplicates “subs” feature.
* Improve sizing and spacing of math over accents.
* Building the fonts no longer use FontForge.