The project has been ported to GTK+3 also on Windows platforms.
The helper scripts now build only GTK+3 installers.
The recent porting of Fedora mingw packages to archlinux made
possible to generate for the first time a win64 installer.
adg-demo now embeds icons of different sizes, ranging from 16x16
to 128x128 pixels. The look-up falls back to srcdir so the icons
can be used also without installing the program. A bunch of new
APIs has been added to help this relocation.
The Windows installers received a lot of cosmetic improvements.
The NSIS code has been cleaned up.