4.17.4 - Replace duplicate logic with xfce_str_replace - Use headerbars for dialogs if Gtk/DialogsUseHeader is enabled (#14) - Add new method "xfce_gtk_menu_append_separator" (Issue #49) - xfce4-about - improve /etc/os-release value unquoting (Issue #47) - Add comment to return gboolean in XfceGtkActionEntry - Translation Updates: Czech, Hebrew, Occitan (post 1500), Romanian, Ukrainian