Changes of version 31.7.0

• Fix Macedonian Cyrillic Gje under italics (#2493).
• Improve widths of overline marks of Serbian italic lower Ghe/Pe/Te.
• Remove crossbar variants for Z/z when under Polish locale (PLK) to avoid confusion with the handwritten Ż/ż allograph, Ƶ/ƶ.
• Make serif variants for Latin Capital/Small Schwa (Ə/ə) only appear under Turkic (Turkish/Azerbaijani/etc.) locales (TRK, AZE, GAG, KAZ, TAT, CRT) as other languages that use Latin Schwa (including the IPA) unify its metrics with Open O (Ɔ/ɔ) or a literal Turned E (Ǝ/ǝ).
• Make serifs of Latin Letter Small Capital I (ɪ) slightly wider under Quasi-Proportional.
• Make Cyrillic Small Letter Komi Dje (ԃ) slightly wider under Quasi-Proportional.
• Make serifs of Small Capital and Modifier Letter Reversed N (ᴎ/ᴻ) more accurately follow the serifs of N.
• Make Som Sign (⃀) follow variants of capital C.
• Make Latin Capital Letter Small Capital I (Ɪ) slightly wider under Etoile.
• Add Characters:
  • CYRILLIC CAPITAL LETTER TJE (U+1C89) ... CYRILLIC SMALL LETTER TJE (U+1C8A).
  • COMPOSITION SYMBOL (U+2384).
  • WHITE DIAMOND IN SQUARE (U+26CB).
  • DRIVE SLOW SIGN (U+26DA).
  • SQUARED SALTIRE (U+26DD) ... FALLING DIAGONAL IN WHITE CIRCLE IN BLACK SQUARE (U+26DE).
  • HEAVY CIRCLED SALTIRE (U+2B59).
  • TOP HALF LEFT PARENTHESIS (U+2E59) ... BOTTOM HALF RIGHT PARENTHESIS (U+2E5C).
  • LATIN CAPITAL LETTER RAMS HORN (U+A7CB) (#2506).
  • LATIN CAPITAL LETTER S WITH DIAGONAL STROKE (U+A7CC) ... LATIN SMALL LETTER S WITH DIAGONAL STROKE (U+A7CD).
  • LATIN CAPITAL LETTER LAMBDA (U+A7DA) ... LATIN CAPITAL LETTER LAMBDA WITH STROKE (U+A7DC).
  • COUNTING ROD UNIT DIGIT ONE (U+1D360) ... COUNTING ROD TENS DIGIT NINE (U+1D371).