Changes of version 31.9.0

• Add IJ-acute ligatures (#2483).
• Allowed customizing menu WWS value to name map (#2488).
• Optimize glyphs for rounded-serifless and rounded-serifed variants for Capital Eszett (ẞ).
• Optimize glyph for Capital OE (U+0152) under Quasi-Proportional.
• Optimize glyphs for closed epsilon shapes (U+025E, U+029A).
• Optimize glyphs for cursive variants for Greek Lower Beta (β) and Cyrillic Lower Ve (в).
• Optimize glyphs for Cyrillic Capital/Lower Broad On (U+047A, U+047B).
• Optimize glyphs for Roman Numeral CD shapes (U+2180, U+2182, U+2188).
• Optimize glyph for Cyrillic Lower Dzze (U+A689) under italics.
• Optimize glyphs for Volapük Ae/Oe/Ue (U+A79A..U+A79F).
• Optimize glyph for Latin Lower Dezh Digraph with Palatal Hook (U+1DF12).
• Fix misalignments of square brackets under certain size caused by rounding errors (#2545).
• Add characters:
  • WAVY LINE (U+2307).
  • SYMMETRY (U+232F).
  • CONICAL TAPER (U+2332).
  • SLOPE (U+2333).
  • LARGE UP TACK (U+27D8).
  • LARGE DOWN TACK (U+27D9).
  • LOZENGE DIVIDED BY HORIZONTAL RULE (U+27E0).
  • VERTICAL ZIGZAG LINE (U+299A).
  • LEFT WIGGLY FENCE (U+29D8) ... RIGHT DOUBLE WIGGLY FENCE (U+29DB).
  • N-ARY SQUARE INTERSECTION OPERATOR (U+2A05).
  • N-ARY SQUARE UNION OPERATOR (U+2A06).
  • VERTICAL SIX DOTS (U+2E3D).
  • WIGGLY VERTICAL LINE (U+2E3E).