title: Prevent chrome.notifications API from hiding my notification after a few seconds
body: <p>I'm doing around 1-2 notifications a day and it's important the user doesn't miss it.  Is there a way of removing the auto close and only allowing the user to manually close the notification?</p>
  
  <p>I don's see any option for this in the Notification Options:</p>
  
  <p><a href="http://developer.chrome.com/extensions/notifications.html#type-NotificationOptions" rel="noreferrer">http://developer.chrome.com/extensions/notifications.html#type-NotificationOptions</a></p>