[gtk] (4 commits) Non-fast-forward update to branch matthiasc/lottie

[Matthias Clasen <matthiasc src gnome org>]

The branch 'matthiasc/lottie' 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:

  29b73a4... Fix a few bugs in the render node parser
  97f3859... path: Stop using arcs for serializing circles
  6687997... Add another path test
  bbf832c... path: Fix up handling of z

Commits added to the branch:

  1e526d0... path: Fix up handling of z
  b690e89... Fix a few bugs in the render node parser
  f8aa3c0... path: Fix serialization for circles
  05af65a... Add another path test