[meld/meld-3-20] Update NEWS + appdata

[Kai Willadsen <kaiw src gnome org>]

commit b3810b9407263adc1cb6bbd83448794b9e9957b2
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Fri Aug 13 16:40:39 2021 +1000

    Update NEWS + appdata

 NEWS                               | 29 +++++++++++++++++++++++++++++
 data/org.gnome.meld.appdata.xml.in | 12 ++++++++++++
 2 files changed, 41 insertions(+)
---
diff --git a/NEWS b/NEWS
index 3aca70a4..1919c5cc 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,33 @@
 
+2021-08-13 meld 3.20.4
+======================
+
+  Fixes:
+
+   * Update Windows build to force all-users installation (Kai Willadsen)
+   * Work around wrapping label allocation issues (Kai Willadsen)
+   * Add the Meld icon to the Windows add/remove programs UI (Kai Willadsen)
+   * Add a basic GTK settings.ini for Windows builds (Kai Willadsen)
+   * Clarify licensing in appdata (Kai Willadsen)
+   * Update copyright in About dialog (Kai Willadsen)
+
+   * Issues fixed: 559, 563, 579, 588, 603
+
+
+  Translations:
+
+   * Alexey Rubtsov (ru)
+   * Andika Triwidada (id)
+   * Asier Sarasua Garmendia (eu)
+   * Charles Monzat (fr)
+   * Hugo Carvalho (pt)
+   * Luna Jernberg (sv)
+   * Piotr Drąg (pl)
+   * Rafael Fontenelle (pt_BR)
+   * Yuri Chornoivan (uk)
+   * Мирослав Николић (sr)
+
+
 2021-02-13 meld 3.20.3
 ======================
 
diff --git a/data/org.gnome.meld.appdata.xml.in b/data/org.gnome.meld.appdata.xml.in
index c52e8bc7..5f3f78f2 100644
--- a/data/org.gnome.meld.appdata.xml.in
+++ b/data/org.gnome.meld.appdata.xml.in
@@ -48,6 +48,18 @@
   <translation type="gettext">meld</translation>
   <content_rating type="oars-1.1" />
   <releases>
+    <release date="2021-08-13" version="3.20.4">
+      <description>
+        <p>
+          This is a stable release in the 3.20 series.
+        </p>
+        <ul>
+          <li>Fix Windows install issues</li>
+          <li>Fix excessive window sizes caused by label wrapping</li>
+          <li>Updated translations</li>
+        </ul>
+      </description>
+    </release>
     <release date="2021-02-13" version="3.20.3">
       <description>
         <p>