[simple-scan] Enhance appdata with more fields used by GNOME Software, Flathub etc.

[Robert Ancell <rancell src gnome org>]

commit 1bffaea5318e349bcb1da1307ba9087fb1cfbcfc
Author: nick richards <nick richards gmail com>
Date:   Thu Sep 19 06:21:38 2019 +0000

    Enhance appdata with more fields used by GNOME Software, Flathub etc.

 data/simple-scan.appdata.xml.in | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/data/simple-scan.appdata.xml.in b/data/simple-scan.appdata.xml.in
index 67de251..cacab84 100644
--- a/data/simple-scan.appdata.xml.in
+++ b/data/simple-scan.appdata.xml.in
@@ -19,6 +19,15 @@
     <screenshot type="default">https://launchpadlibrarian.net/203209644/simple-scan.png</screenshot>
   </screenshots>
   <url type="homepage">https://gitlab.gnome.org/GNOME/simple-scan</url>
+  <url type="bugtracker">https://gitlab.gnome.org/GNOME/simple-scan/issues</url>
+  <url type="donation">http://www.gnome.org/friends/</url>
+  <developer_name>The GNOME Project</developer_name>
+  <releases>
+    <release date="2019-09-08" version="3.34.0"/>
+    <release date="2019-05-05" version="3.32.2.1"/>
+    <release date="2019-04-09" version="3.32.2"/>
+  </releases>
+  <content_rating type="oars-1.1" />
   <update_contact>robert.ancell_AT_canonical.com</update_contact>
   <translation type="gettext">simple-scan</translation>
 </component>