Hints for gimagereader in xenial

gimagereader/3.1.2+git368fa8f-2build1: gimagereader-gtk.desktop ⚙ amd64 ⚙ armhf ⚙ i386 ⚙ s390x ⚙ arm64 ⚙ ppc64el ⚙ powerpc

ancient-metadata
The AppStream metadata should be updated to follow a more recent version of the specification.
Please consult the XML quickstart guide for more information.