A minus.superior sign for exponents/superiors was added in the last release. However, it was too wide in the Sans styles. This release corrects that.
It also adds the ability to substitute the minus.superior for the hyphen rather than only the minus, for easier access.
It also closes #483, by making the fi and fl glyphs only 1 unit wide in the mono. Note that these glyphs aren’t ligatures that are easily accessible or intended for use in code – they are only there for describing the specific Unicode characters 0xFB01 – fi and 0xFB02 - fl.