android: New release after improving recovery after connectivity changes

src/frontends/android/AndroidManifest.xml

@@ -17,8 +17,8 @@
 -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.strongswan.android"
-    android:versionCode="15"
-    android:versionName="1.3.0" >
+    android:versionCode="16"
+    android:versionName="1.3.1" >
 
     <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="17" />