Merge branch 'appstream-validation' into 'master'

Fix strict appdata validation

Closes #23

See merge request pwithnall/malcontent!84

malcontent-control/org.freedesktop.MalcontentControl.appdata.xml.in

@@ -19,13 +19,12 @@
       installed software they can run.
     </p>
   </description>
-  <!--
   <screenshots>
-    <screenshot type="default" width="400" height="480">
-      <image>https://FIXME/malcontent-control.png</image>
+    <screenshot height="552" width="699" type="default">
+      <image>https://gitlab.freedesktop.org/pwithnall/malcontent/-/raw/master/malcontent-control/malcontent-control.png</image>
+      <caption>Main window</caption>
     </screenshot>
   </screenshots>
-  -->
   <provides>
     <binary>malcontent-control</binary>
   </provides>
@@ -46,6 +45,7 @@
   <releases>
     <release version="0.9.0" date="2020-09-03" type="stable">
       <description>
+        <p>This is a stable release with the following changes:</p>
         <ul>
           <li>Minor improvements to parental controls application UI</li>
           <li>Choose rating system by territory rather than language</li>
@@ -55,6 +55,7 @@
     </release>
     <release version="0.8.0" date="2020-04-28" type="stable">
       <description>
+        <p>This is a stable release with the following changes:</p>
         <ul>
           <li>Minor improvements to parental controls application UI</li>
           <li>Add a user manual</li>
@@ -64,6 +65,7 @@
     </release>
     <release version="0.7.0" date="2020-03-24" type="stable">
       <description>
+        <p>This is a stable release with the following changes:</p>
         <ul>
           <li>Minor improvements to parental controls application UI</li>
           <li>Translations to Ukrainian and Polish</li>
@@ -72,6 +74,7 @@
     </release>
     <release version="0.6.0" date="2020-02-26" type="stable">
       <description>
+        <p>This is a stable release with the following changes:</p>
         <ul>
           <li>Improve parental controls application UI and add icon</li>
           <li>Support for indicating which accounts are parent accounts</li>
@@ -80,6 +83,7 @@
     </release>
     <release version="0.5.0" date="2020-02-14" type="stable">
       <description>
+        <p>This is a stable release with the following changes:</p>
         <ul>
           <li>Initial release of basic parental controls application</li>
           <li>Support for setting app installation and run restrictions on users</li>
@@ -88,6 +92,7 @@
     </release>
     <release version="0.4.0" date="2019-07-17" type="stable">
       <description>
+        <p>This is a stable release with the following changes:</p>
         <ul>
           <li>Maintenance release of underlying parental controls library</li>
         </ul>