title: didRegisterForRemoteNotificationsWithDeviceToken is not called on ios10
body: <p>I have 2 iphones: 1 - with ios 10 and 2 - with ios 9</p>
  
  <p><strong>While trying the 1st iphone:</strong> </p>
  
  <p><code>didRegisterForRemoteNotificationsWithDeviceToken</code> method is not called when user clicks "allow" on the alert
  Though, the method <code>didRegisterUserNotificationSettings</code> IS called. 
  In this case device does NOT receive push notifications.</p>
  
  <p><strong>While trying the 2nd iphone:</strong></p>
  
  <p>Both methods are called here. And device DOES receive push notifications.</p>
  
  <p><strong>Then I checked on simulator ios 8</strong></p>
  
  <p>In this case the same as in 1st. Only one method is called.</p>
  
  <p>I checked some answers for similar question but they didn't help me. 
  I doubt that the issue is somewhere within push notifications settings, cuz ios 9 works OK. 
  So the issue is somewhere within ios 10. </p>
  
  <p><strong>The very questions are:</strong></p>
  
  <ol>
  <li>How can I call method <code>didRegisterForRemoteNotificationsWithDeviceToken</code></li>
  <li>Or how can I get the device token since it's the goal</li>
  </ol>
  
  <p>Looking forward for your help!</p>