[pango] (4 commits) Non-fast-forward update to branch serialization-improvements

[Matthias Clasen <matthiasc src gnome org>]

The branch 'serialization-improvements' 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:

  afda699... Update test-layout
  7cb03e6... pango-view: Deserialize context too
  e745759... serializer: Support a "comment" field
  f8f4d3e... Add more tests

Commits added to the branch:

  4319546... Update test-layout
  3b45c63... pango-view: Deserialize context too
  960d07e... serializer: Support a "comment" field
  52fb58e... Add more tests