[gtk/matthiasc/for-master] (30 commits) ...gtk-demo: Plug a memory leak

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  8d9a3de... Merge branch 'matthiasc/for-master' into 'master' (*)
  aedc956... renderboder: Ignore transparent outlines (*)
  ef2af52... widget: Remove size allocate signal enum member (*)
  167c611... widget: Move adjusted size calculation below early-out goto (*)
  949eb8d... node-editor: Monitor file and reload on changes (*)
  b9ed957... gl renderer: Fix nested rounded clip rendering (*)
  f78c167... cssvalue: Add class check to transition (*)
  9e0bf35... paned: Fix up the docs once more (*)
  fcbc972... print-editor: Fix crash (*)
  fede7cd... gtk-demo: Fix expander demo (*)
  a02c588... gtk-demo: InfoBar is not a GtkBox anymore (*)
  8a7fb4b... widget: Make 1 if out of 2 ifs (*)
  ddaf50d... window: Create constraint solver on demand (*)
  a50bf27... main: Inline propagate_{down,up} in propagate_internal() (*)
  9149c79... window: Restructure gtk_window_destroy() (*)
  8dfdd68... Merge branch 'print-editor-new-crash' into 'master' (*)
  10813dd... Merge branch 'gtk-demo-expander-fix' into 'master' (*)
  ab148c0... Merge branch 'wip/baedert/for-master' into 'master' (*)
  fa784aa... Cosmetics (*)
  cbc2493... Update Japanese translation (*)
  d0c54c1... Update Japanese translation (*)
  3bf6bda... demo: Remove double borders from the treeview (*)
  69ee1e1... Adwaita: use thinner arrows for navigation (*)
  4ed062e... Merge branch 'wip/jimmac/menu-styling-adjustments' into 'ma (*)
  51ec0f1... Merge branch 'wip/exalm/ocd' into 'master' (*)
  aae0770... scale: Make the area around the trough clickable (*)
  d1134e7... Merge branch 'usable-scales' into 'master' (*)
  8e6ec0b... tests: Fix scrolling performance test
  10be40a... scrolledwindow: Fix swapping out child
  e87bc3d... gtk-demo: Plug a memory leak

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