* Add characters:
  - LATIN SMALL LETTER C WITH PALATAL HOOK (`U+A794`) (#1478).
  - LATIN SMALL LETTER H WITH PALATAL HOOK (`U+A795`) (#1478).
  - LATIN CAPITAL LETTER C WITH PALATAL HOOK (`U+A7C4`) (#1478).
  - LATIN CAPITAL LETTER Z WITH PALATAL HOOK (`U+A7C6`) (#1478).
* Fix `y`'s cursive variant selectors (#1479).
* Add cursive variants for LATIN SMALL LETTER V WITH PALATAL HOOK (`U+1D8C`) (#1480).
* Fix variant selector for CYRILLIC SMALL LETTER KA WITH STROKE (`U+049F`) (#1481).
