2.27.99 (unstable): This is probably the very last release before 2.28.0 which will happen very soon. Gio: * Removed Application, ApplicationCommandLine, and ActionGroup because they are unfinished. We hope to add them back in glibmm 3.2. * Removed SettingsBackend because it is unfinished. * Settings: Removed API that used SettingsBackend. * Variant: Improved the documentation. Build: Remove the dependency on mm-common during the tarball build.