[polari] appdata: Add release notes

[Florian Müllner <fmuellner src gnome org>]

commit faffbb1b983956537e2bf94907491c2e67666335
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Mar 9 23:17:52 2017 +0100

    appdata: Add release notes
    
    Appstream allows to include release information in the appdata, use
    that to point out the highlights of the upcoming stable release.

 data/appdata/org.gnome.Polari.appdata.xml.in |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/data/appdata/org.gnome.Polari.appdata.xml.in b/data/appdata/org.gnome.Polari.appdata.xml.in
index 3841bc2..277d0f2 100644
--- a/data/appdata/org.gnome.Polari.appdata.xml.in
+++ b/data/appdata/org.gnome.Polari.appdata.xml.in
@@ -50,4 +50,24 @@
     <kudo>Notifications</kudo>
   </kudos>
   <translation type="gettext">polari</translation>
+  <releases>
+    <release version="3.24.0" date="2017-03-20">
+      <description>
+        <p>
+           This release is part of the GNOME 3.24 update. Highlights include:
+        </p>
+        <ul>
+          <li>Nicks in the chat log have a contextual popover with
+              useful information and actions</li>
+          <li>The join dialog now shows existing rooms that can be joined
+              by selecting one or more</li>
+          <li>Polari can now keep running in the background when the
+              window is closed</li>
+          <li>Typed messages are now spell-checked</li>
+          <li>The Polari Flatpak now works without installing additional
+              packages on the system</li>
+        </ul>
+      </description>
+    </release>
+  </releases>
 </component>