[libadwaita] (8 commits) Non-fast-forward update to branch wip/exalm/tab-overview

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/tab-overview' 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:

  f39372c... demo: Update tab indicator icons
  3c30787... icons: Update default tab icon
  8c4eaf3... tab-view: Rename notify_pages in detach_page() to in_dispos
  84a9b51... tab-view: Port away from GtkStack
  15fd610... Add AdwTabButton
  77c994c... Add AdwTabOverview
  3b8b326... Demo

Commits added to the branch:

  8026866... version: Add 1.3 version macros
  58e260a... demo: Update tab indicator icons
  5f5eebc... icons: Update default tab icon
  85afa3f... tab-view: Rename notify_pages in detach_page() to in_dispos
  67b3395... tab-view: Port away from GtkStack
  c651810... Add AdwTabButton
  24a8d40... Add AdwTabOverview
  de583ac... Demo