Version 2.57.91
===============

- #943 - Rsvg-convert now prints a helpful message if you run it
  without arguments, to indicate that it is reading from standard
  input.

- #902 - Take text orientation into account for 'ch' units
  (Mackenzie Morgan).

- For Rust programs, the rsvg crate no longer depends on gdk-pixbuf.
  Hopefully this means that your Rust programs will have to link to
  one fewer library.

- The C enumeration RsvgUnit now has a RSVG_UNIT_CH variant for "ch"
  units.  However, this is only used for reporting the size of SVG
  documents, which should very seldom come in "ch" units.

- #1055 - Fix unsoundness in the use of the selectors crate.

- Update gtk-rs crates (Bilal Elmoussaoui).