title: Firestore not updating local database
body: <p>I have an application that uses Firestore to save data to the server. I have configured offline persistence and get data using <code>addSnapshotListener()</code>. If I write something from my app, it is updated to server correctly, but on second device I can't see new data. If I get the document using <code>get()</code> data is updated but it is really slow. Is there anyway to update local database or get data from network if there is no changes to database?</p>