[gtk] (9 commits) Non-fast-forward update to branch wip/otte/nodeeditor2

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/nodeeditor2' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  ed915df... testsuite: Add cross-fade-in-opacity test
  8c9bbde... testsuite: Remove gl_tests infrastructure
  4633156... testsuite: Add another gl renderer test
  ada15fc... rendernode: Remove old GVariant (de)serialization code
  2e066a1... testsuite: Remove old cairo/vulkan tests
  1da57a3... testsuite: Black out parts of reftest
  b9ede99... Add error func to node deserialization
  a8ec336... ci: Don't disable the gsk suite

Commits added to the branch:

  1c65f33... testsuite: Add cross-fade-in-opacity test
  e01f2aa... testsuite: Remove gl_tests infrastructure
  bcba50a... testsuite: Add another gl renderer test
  1eea7a0... rendernode: Remove old GVariant (de)serialization code
  3400434... testsuite: Remove old cairo/vulkan tests
  24bbbae... testsuite: Black out parts of reftest
  0a8bac0... Add error func to node deserialization
  c58b12d... ci: Don't disable the gsk suite
  2e00a1f... testsuite: Add nodeparser test case