* Add characters:
  - KAYAH LI SIGN CWI (`U+A92E`).
  - ZERO WIDTH NON-BREAKING SPACE (`U+FEFF`).
* Add APL form (`APLF`) for `U+25E0` and `U+25E1`, for UIUA.
* Add Cyrillic localization forms for Bashkir and Chuvash.