1.5.6:1. FIX: compatibility issues on Android 4.21.5.4:1. FIX: SECURITY ISSUE reported by SSHunTunnel2. FIX: bugs in app chooser1.5.3:1. Upstream Proxy, e.g cmwap (10.0.0.172:80) for China Mobile users2. Check finger print when connecting3. new redsocks