[gnome-multi-writer] Release version 3.21.91

[Richard Hughes <rhughes src gnome org>]

commit 71ddfc810a0580add1460253e541e8e7931315b8
Author: Richard Hughes <richard hughsie com>
Date:   Mon Aug 29 09:11:46 2016 +0100

    Release version 3.21.91

 data/appdata/org.gnome.MultiWriter.appdata.xml.in |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/data/appdata/org.gnome.MultiWriter.appdata.xml.in 
b/data/appdata/org.gnome.MultiWriter.appdata.xml.in
index 6542dc8..f752f6d 100644
--- a/data/appdata/org.gnome.MultiWriter.appdata.xml.in
+++ b/data/appdata/org.gnome.MultiWriter.appdata.xml.in
@@ -62,6 +62,15 @@
    Use `date -d now +%s` or `date -d 2010-01-32 +%s` to get the timestamp.
   -->
   <releases>
+    <release version="3.21.91" date="2016-08-29">
+      <description>
+        <p>This unstable release fixes the following bug:</p>
+        <ul>
+          <li>Check for authentication before copying starts</li>
+        </ul>
+        <p>This release also updates translations.</p>
+      </description>
+    </release>
     <release version="3.21.90" date="2016-08-15">
       <description>
         <p>This release only updates translations.</p>