[meld] Update NEWS + appdata

[Kai Willadsen <kaiw src gnome org>]

commit 3f2842c666902bd96c2e0d9097c399542a7d9fe5
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Aug 14 09:02:41 2022 +1000

    Update NEWS + appdata

 NEWS                                  | 31 +++++++++++++++++++++++++++++++
 data/org.gnome.meld.appdata.xml.in.in | 13 +++++++++++++
 2 files changed, 44 insertions(+)
---
diff --git a/NEWS b/NEWS
index b95320b5..814428d8 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,35 @@
 
+2022-08-14 meld 3.21.3
+======================
+
+  Features:
+
+   * Add shortcut for open externally action (Kai Willadsen)
+   * Add improved tooltips for tab labels (Kai Willadsen)
+
+  Fixes:
+
+   * Move horizontal-icon menu section to regular menu items (Kai Willadsen)
+   * Fix chunk navigation actions sometimes not working after chunk push/pull
+     actions (Kai Willadsen)
+   * Show more parent context in path label display (Kai Willadsen)
+   * Update meson build to strip env from shebang line (Kai Willadsen)
+   * Fix left-click chunk actions under certain window managers (Dmytro Bagrii)
+   * Fix version control showing console windows on Windows (Kai Willadsen)
+   * Fix path label display for very long filenames (Kai Willadsen)
+   * CI fixes (Bartłomiej Piotrowski, Kai Willadsen)
+   * Issues fixed: #141, #496, #646, #658, #682, #692, #694, #697
+
+  Translations:
+
+   * Anders Jonsson (sv)
+   * Hugo Carvalho (pt)
+   * Jürgen Benvenuti (de)
+   * Piotr Drąg (pl)
+   * Sergej A (ru)
+   * Yuri Chornoivan (uk)
+
+
 2022-06-18 meld 3.21.2
 ======================
 
diff --git a/data/org.gnome.meld.appdata.xml.in.in b/data/org.gnome.meld.appdata.xml.in.in
index d06292ac..d38ed4b2 100644
--- a/data/org.gnome.meld.appdata.xml.in.in
+++ b/data/org.gnome.meld.appdata.xml.in.in
@@ -52,6 +52,19 @@
   <translation type="gettext">meld</translation>
   <content_rating type="oars-1.1" />
   <releases>
+    <release date="2022-08-13" version="3.21.3">
+      <description>
+        <p>
+          This is an unstable release in the 3.21 development series.
+        </p>
+        <ul>
+          <li>Open Externally now has a keyboard shortcut</li>
+          <li>The new path label display shows more useful information</li>
+          <li>Windows binary builds have been fixed</li>
+          <li>Updated translations</li>
+        </ul>
+      </description>
+    </release>
     <release date="2022-06-18" version="3.21.2">
       <description>
         <p>