Version 2.44.5
- Fix #343 - Handle child being in error in feComponentTransfer.
- Fix #346 - Handle filter primitives producing errors.
- Fix #347 - Regression in computation of text element extents.
- Fix #348 - Fix incorrect font sizing.
- Fix #349 - Don't panic when loading an external image that is bigger
  than Cairo's limits.
- Fix - rsvg_handle_get_dimensions_sub() no longer panics if passed a
  nonexistent fragment identifier.
- CSS processing code is now in Rust, although it still calls libcroco
  to do the parsing.