Comment 3 for bug 1915695

Reported the depreciation upstream on https://github.com/AyatanaIndicators/libayatana-appindicator/issues/18 , though most of the items are due to the use of 'Gtk' because the project builds gtk2 libraries and gtk_status_icon_* by the nature of the project (there is no newer API to port to, GNOME just disagrees with status icons or indicators and recommend using notifications instead)