 * The variants of Aile is now chosen to better reflect a Neo-Grotesque fashion (#903).
 * Add Heavy Black Curved Upwards And Rightwards Arrow (`U+27A6`) for Agnoster compatibility.
 * Add characters:
   - Commercial Minus Sign (`U+2052`).
   - Precedes Under Relation (`U+22B0`) and Succeeds Under Relation (`U+22B1`)
   - Heavy Black Curved Downwards And Rightwards Arrow (`U+27A5`)
 * Improved spacing of tailed / flat-tailed `i`, `l` and `iota` characters (#905).