3.24.1: (stable)

The tarball for 3.24.1 has been created with 'meson dist'.
If you build with Autotools from the tarball, please read the README
file, especially the last paragraph.

* custom_widget example: Use Glib::ExtraClassInit
  (Kjell Ahlstedt)
* buildapp examples: Add meson.build files
  Add meson.build files and auxiliary scripts for meson builds
  (Kjell Ahlstedt)
* Gtk::Builder chapter: Describe combination with Glib::Property
  (Kjell Ahlstedt)
* Builder: Using derived widgets: Update for glibmm 2.62
  (Daniel Boles) Merge request !5
* Don't recommend `new` for an in-class member
  (Daniel Boles) Merge request !7
* Drop pointless/confusing class around RadioButtons
  (Daniel Boles) Merge request !6
* Add treeview/custom_treemodel example
  (Kjell Ahlstedt) Issue #9 (Danny van Elsen)
* Describe how the mm-common/skeletonmm project is built with Meson
  (Kjell Ahlstedt)
* input example: Don't include build/config.h
  (Kjell Ahlstedt) Issue #11 (Keyikedalube Ndang)
* Describe how to build a multi-threaded program
  (Kjell Ahlstedt) Issue #12 (Keyikedalube Ndang)