Added changelog for version 1.3.0.

Author: jlesage

appdefs.xml

@@ -90,6 +90,16 @@ For more details about port forwarding, see the following links:
     </documentation>
     <!-- Changelog of the application. -->
     <history>
+      <release>
+        <version>1.3.0</version>
+        <date>2019-02-21</date>
+        <change>Make sure to upgrade the database if required.</change>
+        <change>Properly notify the supervisor when the database is ready.</change>
+        <change>Make sure to not use the database directory if it was not initialized successfully.</change>
+        <change>Upgraded Nginx Proxy Manager to version 2.0.9.</change>
+        <change level="2">Fixed issue where HTTP/2 option could not be disabled.</change>
+        <change level="2">Added HSTS settings.</change>
+      </release>
       <release>
         <version>1.2.1</version>
         <date>2019-01-26</date>