New API in glibmm 2.12

Member Glib::KeyFile::set_double (const Glib::ustring & group_name, const Glib::ustring & key, double value)

Member Glib::KeyFile::set_double (const Glib::ustring & key, double value)

Member Glib::OptionContext::get_description () const

Member Glib::OptionContext::get_summary () const

Member Glib::OptionContext::set_description (const Glib::ustring & description)

Member Glib::OptionContext::set_summary (const Glib::ustring & summary)

Member Glib::OptionContext::set_translation_domain (const Glib::ustring & domain)