[libadwaita] (5 commits) Non-fast-forward update to branch wip/exalm/window-border

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/window-border' 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:

  07aa165... stylesheet: Fix indentation for window styles
  c852614... stylesheet: Add a window outline

Commits added to the branch:

  1d1adb5... squeezer: Make layout work with vertical orientation (*)
  9a52895... squeezer: Fix crossfade with RTL and non-default xalign (*)
  43f4d6f... stylesheet: Fix indentation for window styles
  1192f34... stylesheet: Add a window outline
  330b5e3... stylesheet: Add an outline for popovers

(*) This commit already existed in another branch; no separate mail sent