[gnome-software/gnome-3-30] Release version 3.30.6

[Kalev Lember <klember src gnome org>]

commit ae42d5130a200a0fe60c011f29e4e699be639cf4
Author: Kalev Lember <klember redhat com>
Date:   Tue Dec 18 02:33:35 2018 +0100

    Release version 3.30.6

 NEWS                                           | 28 ++++++++++++++++++++++++++
 data/appdata/org.gnome.Software.appdata.xml.in | 26 ++++++++++++++++++++++++
 2 files changed, 54 insertions(+)
---
diff --git a/NEWS b/NEWS
index 18d841ef..5b17254d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,31 @@
+Version 3.30.6
+~~~~~~~~~~~~~~
+Released: 2018-12-18
+
+This is a stable release with the following changes:
+ * Fix various thread safety related crashes
+ * Fix row unrevealing to not leave behind 2 pixels on the updates page
+ * Make the refresh button to actually refresh packagekit cache
+ * Fix various issues that could lead to cache refresh getting stuck
+ * Show updates available notifications even when automatic updates are
+   disabled
+ * Fix counting apps in the updates applied notification
+ * Improve packagekit update loading code, hopefully making it more robust
+ * Fix an issue that could lead to the packagekit plugin activating on
+   rpm-ostree based systems
+ * Switch flatpak updates to use a single transaction, which lets us share more
+   code (and bugs) with the command line flatpak utility
+ * Fix various issues with transitioning from the "Download" state to "Restart
+   & Update"
+ * Don't error out from update downloads if the ODRS server is unavailable
+ * Fix old updates accumulating in the OS Updates item
+ * Various flatpakref installation fixes
+ * Fix opening the details page when clicking on "Show Details" in GNOME Shell
+ * Fix opening shell extensions details from GNOME Tweaks
+ * Various fixes for initial loading state
+
+This release also updates translations.
+
 Version 3.30.5
 ~~~~~~~~~~~~~~
 Released: 2018-10-24
diff --git a/data/appdata/org.gnome.Software.appdata.xml.in b/data/appdata/org.gnome.Software.appdata.xml.in
index d8eae5cd..eee7ebd6 100644
--- a/data/appdata/org.gnome.Software.appdata.xml.in
+++ b/data/appdata/org.gnome.Software.appdata.xml.in
@@ -46,6 +46,32 @@
    Validate with `appstream-util validate *.appdata.xml`
   -->
   <releases>
+    <release date="2018-12-18" version="3.30.6">
+      <description>
+        <p>
+          This is a stable release with the following changes:
+        </p>
+        <ul>
+          <li>Fix various thread safety related crashes</li>
+          <li>Fix row unrevealing to not leave behind 2 pixels on the updates page</li>
+          <li>Make the refresh button to actually refresh packagekit cache</li>
+          <li>Fix various issues that could lead to cache refresh getting stuck</li>
+          <li>Show updates available notifications even when automatic updates are disabled</li>
+          <li>Fix counting apps in the updates applied notification</li>
+          <li>Improve packagekit update loading code, hopefully making it more robust</li>
+          <li>Fix an issue that could lead to the packagekit plugin activating on rpm-ostree based 
systems</li>
+          <li>Switch flatpak updates to use a single transaction, which lets us share more code (and bugs) 
with the command line flatpak utility</li>
+          <li>Fix various issues with transitioning from the "Download" state to "Restart &amp; Update"</li>
+          <li>Don't error out from update downloads if the ODRS server is unavailable</li>
+          <li>Fix old updates accumulating in the OS Updates item</li>
+          <li>Various flatpakref installation fixes</li>
+          <li>Fix opening the details page when clicking on "Show Details" in GNOME Shell</li>
+          <li>Fix opening shell extensions details from GNOME Tweaks</li>
+          <li>Various fixes for initial loading state</li>
+        </ul>
+        <p>This release also updates translations.</p>
+      </description>
+    </release>
     <release date="2018-10-24" version="3.30.5">
       <description>
         <p>