Changes of version 27.3.0

• Make the tailed variants of i and l use the fully-tailed shape even when upright, as is consistent with t = bent-hook (#1692).
  • The old, slightly-curly variants for i, l, iota (ι) and tau (τ) are moved to semi-tailed variants.
  • Corresponded SSes are changed to keep the shape identical to the old version.
• Make Cyrillic Yat to follow Yeri variants. Italic Yat will also respond to variants of n (#2047).
• Add short-tailed lowercase tau (τ) (#2050).
• Fix tailed variants for U+02A0.
• Stylistic set fixes:
  • Fix cv44 and cv99 for ss13.
  • Fix cv48 and cv54 for ss17.
  • Fix cv51 for Etoile.
  • Fix cv52 for ss15 and Etoile.
  • Fix cv58 for ss15.
  • Fix cv59 for ss07.
  • Fix cv61 for ss15 and ss17.
  • Fix cv66 for ss01, ss06, and ss15.
  • Fix vsAF for ss11.
  • Fix vsAL for ss09 and ss18.