* Add narrow bent hook variants for `f`, `j`, `r`, and `t` (#3132).
* Add `crossbar-at-half-ascender-height` variants for `f`.
* Add `motion-bottom-serifed` variants for `q`.
* Add `middle-serifed-half-ascender` variants for long-s (`ſ`) and lower eszett (`ß`).
* Add `serifed` variants for Greek Lower Gamma (`γ`).
* Add `diagonal-tailed` variant for Greek Lower Pi (`π`).
* Add `short-neck` and `short-neck2` variants for Greek Lower Phi (`φ`) and Psi (`ψ`).
* Add dense variants for ellipsis (#3133).
* Add IPA localization forms for Greek Lower Lambda (`λ`) and Psi (`ψ`).
* Refine shape of the following characters:
  - CYRILLIC CAPITAL LETTER DJE (`U+0402`).
  - CYRILLIC CAPITAL LETTER TSHE (`U+040B`).
  - CYRILLIC CAPITAL LETTER PSI (`U+0470`).
  - CYRILLIC SMALL LETTER PSI (`U+0471`).
  - MODIFIER LETTER RAISED INVERTED EXCLAMATION MARK (`U+A71E`).
  - MODIFIER LETTER DENTAL CLICK (`U+107B6`).
  - MODIFIER LETTER LATERAL CLICK (`U+107B7`).
  - MODIFIER LETTER ALVEOLAR CLICK (`U+107B8`).
