Target iOS version 11

ProjectSettings/ProjectSettings.asset

   StripUnusedMeshComponents: 1
   VertexChannelCompressionMask: 4054
   iPhoneSdkVersion: 988
-  iOSTargetOSVersionString: 9.0
+  iOSTargetOSVersionString: 11.0
   tvOSSdkVersion: 0
   tvOSRequireExtendedGameController: 0
   tvOSTargetOSVersionString: 9.0