Push not received when app is killed
<p>I am using the new FCM to push message from my server to my android app.</p>

<pre>
{
    "to" : "APA91bHun4MxP5egoKMwt2KZFBaFUH-1RYqx...",
    "data" : {
      "Nick" : "Mario",
      "Room" : "PortugalVSDenmark"
    }
}
</pre>

<p>I am able to push messages to my app using the new FCM however, when I kill the app (long press on home button then slide the app to the left), push messages are not delivered any more.</p>

<p>Why? </p>