• Fix missing “math” OpenType script from Libertinus Math.
• Add \QED symbol to Libertinus Math, also add Add ⦇ (U+2987) and ⦈ (U+2988).
• Fix mis-encoded glyphs in Libertinus Serif Semibold Italic.
• Make digits fitted in Libertinus Serif Initials font, and drop incomplete Greek, Cyrillic and Hebrew support.
• Add U+AB52 and U+A793 to Libertinus Serif Regular.