[gtkmm-documentation] Created tag 3.97.1

[Kjell Ahlstedt <kjellahl src gnome org>]

The unsigned tag '3.97.1' was created.

Tagger: Kjell Ahlstedt <kjellahlstedt gmail com>
Date: 1581862339 +0100

    3.97.1

Changes since the last tag '3.95.1':

Daniel Boles (6):
      Assign to mem from get_widget() in ctor init list,
      Builder: Using derived widgets: Update for glibmm…
      docb: Don't recommend `new` for an in-class member
      Drop pointless/confusing class around RadioButtons
      Redo odd wording @ RadioBut.set_group(get_group())
      book/menus/popup/examplewindow: new => unique_ptr

Kjell Ahlstedt (35):
      meson.build: Use gnome.yelp()
      meson.build: "ninja test" builds the example programs
      Remove obsolete and redundant README and TODO files
      README files: meson is the recommended build system
      examples: Update calls to Gtk::Builder::get_widget()
      index-in.docbook: Update calls to Gtk::Builder::get_widget()
      Builder examples: Remove can_default from the .glade files
      examples: Update to latest gtkmm4 (Gtk::GestureClick, etc.)
      meson.build: *_DISABLED_DEPRECATED -> *_DISABLE_DEPRECATED
      Application example: Use Gio::Application::add_option_group()
      builder/derived example: Show Gtk::Builder combined with Glib::Property
      Gtk::Builder chapter: Describe combination with Glib::Property
      Shell scripts: Don't hard-code the path of bash
      tools/meson_aux: Use short options for some commands
      meson.build: Several minor improvements
      examples: Gtk::Label::set_line_wrap() -> set_wrap()
      Use glibmm-2.64 instead of glibmm-2.62
      tools/meson_aux: Replace shell scripts with Python scripts
      examples/book/buildapp: Replace shell script with Python script
      Makefile.am: Distribute files needed when building with Meson
      examples/book/buildapp: exampleapp.desktop -> exampleapp.desktop.in
      examples/book/buildapp/step1/install-cmd.py: Minor improvement
      docs/tutorial/insert_example_code.pl: Add an error message
      buildapp: Update description of Gtk::Window::set_application()
      Make conversions between std::string and Glib::ustring explicit
      Update description of some gmmproc macros
      examples: Replace Glib::Exception by Glib::Error
      Change git.gnome.org to gitlab.gnome.org
      Add examples/book/treeview/custom_treemodel
      examples: Update to latest gtkmm4 (removed Gtk::Menu, etc.)
      Update drag-and-drop examples
      examples/meson.build: Don't use the bash command
      Update some buildapp examples
      Update for gtk 3.98.0 and gtkmm 3.97.1
      3.97.1