[gtk] (8 commits) Non-fast-forward update to branch wip/otte/canvas

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/canvas' 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:

  504d7f4... Add GtkCanvas
  9307792... demos: Add a Canvas Hello World demo
  e64c59b... canvas: Add gtk_canvas_get_viewport_size()

Commits added to the branch:

  011fd58... Add GtkCanvas
  2a1e88a... demos: Add a Canvas Hello World demo
  e874bc1... canvas: Add gtk_canvas_get_viewport_size()
  66ab181... gtk-demo: Fix typo in comment
  eb97b4a... demos: Add a puzzle demo
  4f35f80... canvasbox: Get rid of specializing
  69eeb20... canvasbox: Add getters
  d16b4ec... canvas: Handle oversized widgets properly