Bump version to 0.20

configure.ac

@@ -1,7 +1,7 @@
 AC_PREREQ([2.69])
 
 AC_INIT(	[celluloid],
-		[0.19],
+		[0.20],
 		[http://github.com/celluloid-player/celluloid/issues],
 		[celluloid],
 		[http://github.com/celluloid/celluloid] )

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

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Copyright 2015-2019 gnome-mpv -->
+<!-- Copyright 2015-2020 gnome-mpv -->
 <component type="desktop">
  <id>io.github.celluloid_player.Celluloid</id>
  <metadata_license>CC-BY-SA-4.0</metadata_license>
@@ -29,6 +29,45 @@
  </description>
  <developer_name>The Celluloid Developers</developer_name>
  <releases>
+  <release date="2020-09-19" version="0.20">
+   <description>
+    <p>
+     This release contains the following changes:
+    </p>
+    <ul>
+     <li>
+      Make it possible to activate context menu when the playlist is empty.
+     </li>
+     <li>
+      Prevent constant resizing of the seek bar due to timestamp label resizing
+      as its value changes.
+     </li>
+     <li>
+      Only show a single error dialog when a large number of errors occurs in
+      rapid succession.
+     </li>
+     <li>
+      Add menu item for opening folders.
+     </li>
+     <li>
+      Adjust position of UI elements of modal dialogs in non-CSD mode to be more
+      consistent with CSD mode.
+     </li>
+     <li>
+      Add support for loading external video tracks.
+     </li>
+     <li>
+      Make playlist shuffle toggleable.
+     </li>
+     <li>
+      Make arrow key bindings work with arrow keys on numpad.
+     </li>
+    </ul>
+    <p>
+     This listing is incomplete. See git log for complete changelog.
+    </p>
+   </description>
+  </release>
   <release date="2020-04-08" version="0.19">
    <description>
     <p>

meson.build

@@ -1,5 +1,5 @@
 project('celluloid', 'c',
-  version: '0.19',
+  version: '0.20',
   meson_version: '>= 0.49.0',
   default_options: [
     'warning_level=2',