[gtk: 10/10] Merge branch 'matthiasc/for-master' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

commit fd52220b1b46813152d649f04f4b2b6709576ac6
Merge: dbdc909e19 e9438224ab
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Nov 3 20:15:08 2020 +0000

    Merge branch 'matthiasc/for-master' into 'master'
    
    Matthiasc/for master
    
    Closes #3318, #3319, and #3320
    
    See merge request GNOME/gtk!2776

 NEWS                                   | 16 ++++++++++++++++
 demos/widget-factory/widget-factory.c  | 22 ++++++++++++++++++++++
 demos/widget-factory/widget-factory.ui |  4 ++--
 docs/reference/gtk/migrating-3to4.md   | 12 ++++++------
 gdk/gdksurface.c                       |  8 +++-----
 gtk/gtkmagnifier.c                     |  2 ++
 gtk/gtkpopover.c                       |  4 ++--
 gtk/gtkpopovermenu.c                   |  1 +
 gtk/gtktexthandle.c                    | 17 ++++++++---------
 gtk/theme/Adwaita/_common.scss         |  3 +++
 10 files changed, 65 insertions(+), 24 deletions(-)
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