version 3.15.90
  - Avoid warnings from -Wswitch-enum
    Check switch statements where several cases are intentionally not
    handled by using an if instead.
  - Avoid a preprocessor warning
  - Fix const cast warnings
  - Fix signedness comparison error
  - Fix shadowed variable
  - Remove old-style function definitions
  - Fix signed comparison warning in camera service
  - Update gtkdoc_jh_path_xml_catalog.m4 from gtk-doc
  - Remove use of GSEAL_ENABLE
    It is no longer useful with GTK+ 3, where every widget has been sealed.
  - Remove use of GNOME_MAINTAINER_MODE_DEFINES
    https://wiki.gnome.org/Projects/GnomeCommon/Migration
  - Drop use of gnome-autogen.sh
    https://wiki.gnome.org/Projects/GnomeCommon/Migration
  - preferences: resolve ambiguous 'ListStore' usage
    There is now a GLib.ListStore as well, so make sure we use the full name
    Gtk.ListStore to avoid an ambiguous reference.
  - Added/Updated Translations
    - an, courtesy of Daniel Martinez