[librsvg: 8/8] Merge branch 'notriddle/lang-pseudo-class' into 'main'

[Marge Bot <marge-bot src gnome org>]

commit 49fa16a71106cb6d5bf60241a42c8cbcaefaf5cc
Merge: 413857f3 28ae2e81
Author: Marge Bot <marge-bot gnome org>
Date:   Fri Oct 15 21:01:02 2021 +0000

    Merge branch 'notriddle/lang-pseudo-class' into 'main'
    
    Add support for CSS :lang() pseudo-class
    
    Closes #649
    
    See merge request GNOME/librsvg!606

 FEATURES.md                                        |  25 +++++++
 src/css.rs                                         |  81 ++++++++++++++++++++-
 src/element.rs                                     |   8 ++
 src/properties.rs                                  |  17 ++++-
 src/property_defs.rs                               |  12 ++-
 src/text.rs                                        |   2 +-
 .../reftests/structural-pseudo-classes-ref.png     | Bin 0 -> 1363 bytes
 .../reftests/structural-pseudo-classes.svg         |  59 +++++++++++++++
 tests/fixtures/reftests/xml-lang-css-ref.png       | Bin 0 -> 126 bytes
 tests/fixtures/reftests/xml-lang-css.svg           |  22 ++++++
 10 files changed, 220 insertions(+), 6 deletions(-)
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