Added changelog for version 1.3.0. [skip ci]

appdefs.xml

@@ -26,6 +26,17 @@ from Jinja2 templates.
     <documentation/>
     <!-- Changelog of the application. -->
     <history>
+      <release>
+        <version>1.3.0</version>
+        <date>2020-08-05</date>
+        <change>Upgraded Avidemux to version 2.7.4.</change>
+        <change>Now using baseimage v3.5.6, based on Alpine 12, which brings the following changes:</change>
+        <change level="2">Updated installed packages to get latest security fixes.</change>
+        <change level="2">Make sure the tzdata is installed.</change>
+        <change level="2">Upgraded glibc to version 2.31 on Alpine Linux images with glibc integrated.</change>
+        <change level="2">Updated installed packages to get latest security fixes.</change>
+        <change level="2">Adjusted the log monitor target for recent versions of YAD.</change>
+      </release>
       <release>
         <version>1.2.7</version>
         <date>2019-09-04</date>