Bump version to 0.22

configure.ac

@@ -1,7 +1,7 @@
 AC_PREREQ([2.69])
 
 AC_INIT(	[celluloid],
-		[0.21],
+		[0.22],
 		[http://github.com/celluloid-player/celluloid/issues],
 		[celluloid],
 		[http://github.com/celluloid/celluloid] )

data/io.github.celluloid_player.Celluloid.appdata.xml.in

@@ -29,6 +29,51 @@
  </description>
  <developer_name>The Celluloid Developers</developer_name>
  <releases>
+  <release date="2021-11-05" version="0.22">
+   <description>
+    <p>
+     This release contains the following changes:
+    </p>
+    <ul>
+     <li>
+      Migrate to GTK4.
+     </li>
+     <li>
+      Add Greek translation by @lepa22.
+     </li>
+     <li>
+      Add Korean translation by @jullee96.
+     </li>
+     <li>
+      Add Norwegian Bokmål translation by Allan Nordhøy.
+     </li>
+     <li>
+      Add Occidental translation by OIS.
+     </li>
+     <li>
+      Add Arabic translation by Mohamed Benkouider.
+     </li>
+     <li>
+      Add Urdu translation by Ahmed Iqbal.
+     </li>
+     <li>
+      Add option to show title buttons in fullscreen mode.
+     </li>
+     <li>
+      Add option to present the window when opening files.
+     </li>
+     <li>
+      Change default screenshot filename template to FILENAME-TIMESTAMP (%f-%P).
+     </li>
+     <li>
+      Fix inaccurate timestamp preview.
+     </li>
+    </ul>
+    <p>
+     This listing is incomplete. See git log for complete changelog.
+    </p>
+   </description>
+  </release>
   <release date="2021-03-22" version="0.21">
    <description>
     <p>

meson.build

@@ -1,5 +1,5 @@
 project('celluloid', 'c',
-  version: '0.21',
+  version: '0.22',
   meson_version: '>= 0.49.0',
   default_options: [
     'warning_level=2',