Version 2.41.1
- The feConvolveMatrix filter primitive wasn't being rendered at all;
  now it works.
- Pattern specifications can now have a fallback color, per the spec -
  https://www.w3.org/TR/SVG/painting.html#SpecifyingPaint
- Tests now use a very basic form of reproducible font rendering.
  This means that "make check" should pass even if you have a custom
  Fontconfig setup.
- Fixed recursive fallbacks in gradients.
- Per the spec, we now don't render elements which have invalid
  attributes.
- Windows build: support building with Fontconfig; support Visual
  Studio 2017; generate .pc files upon install (Chun-wei Fan)
- Fixed bgo#621088 - Text elements can now be used as clipping paths.
- Fixed bgo#587721 - Fix rendering of text elements with transformations
  (Massimo)
- Fixed bgo#776932 - Don't crash on elements with an invalid
  "transform" attribute.
- Fixed bgo#777155 - Ignore patterns that have close-to-zero dimensions.
- Fixed bgo#776297 - Don't render markers for rect / circle elements;
  fix marker angles in some cases (Massimo).
- Fixed bgo#777834 - Don't crash when rendering text with empty
  extents.
- Fixed bgo#634324 - Gaussian blur with negative-scaling
  transformation was being rendered incorrectly.
- Fixed bgo#783835 - Don't divide by zero in Gaussian blurs
- Fixed division by zero in feTile filter when the input surface is
  empty.
- Fixed bgo#779489 - Link to pangoft2 as required.
- Don't crash in filters when one of them yields an invalid surface
  for an intermediate result.
- Update for bgo#778666 - Use our own thumbnailer specification file
  (Jeremy Bicha).
- Fixed bgo#782098 - Don't pass deprecated options to gtkdoc-scangobj
  (Ting-Wei Lan).
- Fixed bgo#777833 - Various memory leaks (Philip Withnall, Federico Mena)
- Fixed bgo#786372 - Use the correct default for the style element's
  "type" attribute.
- Fixed bgo#634514 - Don't render unknown elements and their children.
- Fix parsing of "azimuth", "elevation", "limitingConeAngle" for
  filter effects.
- Fixed bgo#785276 - Don't crash on empty or single-byte files.
- Made the <switch> element work; SVG feature names were being
  tested incorrectly.
- Fixed a few cases of uninitialized struct fields.
- Code converted to Rust: preserveAspectRatio attribute, viewBox
  attribute, core Node structure, path/line/rect/circle/ellipse basic
  shapes, group/defs/switch/svg/use/symbol structural elements, pattern element
  and pattern fallbacks, marker rendering, various parsers, error
  propagation from parsers, gradient stops, gradient element, 
- Added a bunch of new test cases for the new features and the
  code converted to Rust.
- We now require cairo-rs 0.2.0
- We now require lalrpop 0.13.1
- The librsvg tarball now comes with the Rust dependencies embedded
  using "cargo vendor".  Linux distros can replace these dependencies
  with their own versions using the infrastructure described in
  http://doc.crates.io/source-replacement.html