[libadwaita] (20 commits) Non-fast-forward update to branch wip/exalm/buttons-5

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/buttons-5' 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:

  aecafd7... tab: Use the default flat style for buttons
  8970484... stylesheet: Use lighter active states
  649058e... stylesheet: Unify spinbutton styles
  c2e94b9... stylesheet: Remove redundant osd button special cases
  4bc2ade... stylesheet: Remove a trailing blank line
  fb5cc9d... stylesheet: Use flat button style for calendar header
  6312996... stylesheet: Transparentize disabled buttons
  5294061... stylesheet: Add a selected+active view color
  89f2e54... stylesheet: Remove special osd image button styles
  9de5c5c... stylesheet: Add linebreaks in _colors.scss
  f92ff0a... stylesheet: Redo the message dialog action area
  21a09f7... stylesheet: Rework .linked
  946e6d2... stylesheet: Use currentColor instead of text color
  1811501... stylesheet: Overhaul button styles
  1cd8517... stylesheet: Lighten up entry borders
  0a199f6... stylesheet: Lighten header bar
  9486073... stylesheet: Brighten accent color for dark variant

Commits added to the branch:

  8b17cd5... tab-view: Add tests for the pages model (*)
  7640bfd... tab-view: Update the model later when attaching pages (*)
  2bae1bb... clamp: Fix using "width" instead of "size" in doc (*)
  5a07011... tab: Use the default flat style for buttons (*)
  1097a57... stylesheet: Use lighter active states
  f1eeb94... stylesheet: Unify spinbutton styles
  f6196e9... stylesheet: Remove redundant osd button special cases
  e5b40ec... stylesheet: Remove a trailing blank line
  9015fb6... stylesheet: Use flat button style for calendar header
  bb5ad30... stylesheet: Transparentize disabled buttons
  da4ec19... stylesheet: Add a selected+active view color
  66dd0c4... stylesheet: Remove special osd image button styles
  5a6e8ce... stylesheet: Add linebreaks in _colors.scss
  9028bde... stylesheet: Redo the message dialog action area
  ef0b1a9... stylesheet: Rework .linked
  4133dfd... stylesheet: Use currentColor instead of text color
  d863a38... stylesheet: Overhaul button styles
  340aedc... stylesheet: Lighten up entry borders
  6505b1f... stylesheet: Lighten header bar
  f475f5e... stylesheet: Brighten accent color for dark variant

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