At this point it feels long overdue, but finally there is an GtkD release that is updated for the latest GTK+ libraries.
And i finally took the time to change the documentation on the website from candydoc to one generated by Adam's adrdox. https://api.gtkd.org
Full changelog: https://gtkd.org/changelog.html Download: https://gtkd.org/download.html -- Mike Wey