title: Xamarin Forms "Bundle assemblies into native code" and ofbuscation
body: <p>I created Android app with Xamarin Forms. For release I use option "Bundle assemblies into native code". 
  My apk have size - 17 Mb, without this option 33 Mb. Do I need to use obfuscation for my libraries or my code is protected?
  I searched a lot - but I did not find an exact answer. </p>