[gtkmm: 2/2] Merge branch 'flatten_slice_models' into 'master'

[Andreas Persson <andreasp src gnome org>]

commit 05f44c3d5ff6a2a73b4db480e42b2b4cc686b87b
Merge: 4f81b2cc 2cdd790f
Author: Andreas Persson <andreasp56 outlook com>
Date:   Mon Sep 14 17:35:15 2020 +0000

    Merge branch 'flatten_slice_models' into 'master'
    
    Add Gtk::FlattenListModel and Gtk::SliceListModel
    
    See merge request GNOME/gtkmm!45

 .gitignore                                |  4 ++
 gtk/gtkmm.h                               |  2 +
 gtk/gtkmm/meson.build                     |  2 +
 gtk/src/filelist.am                       |  2 +
 gtk/src/flattenlistmodel.ccg              | 17 ++++++++
 gtk/src/flattenlistmodel.hg               | 60 ++++++++++++++++++++++++++++
 gtk/src/gtk_extra_objects.defs            | 12 ++++++
 gtk/src/gtk_signals.defs                  | 42 ++++++++++++++++++++
 gtk/src/slicelistmodel.ccg                | 17 ++++++++
 gtk/src/slicelistmodel.hg                 | 65 +++++++++++++++++++++++++++++++
 tools/extra_defs_gen/generate_defs_gtk.cc |  2 +
 11 files changed, 225 insertions(+)
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