title: incremental updates documentation is not clear enough
body: <p>I have a database where I need keep up with changes on Wikidata changes, and while I was looking for ways to do it, I found these three:</p>
  
  <ul>
  <li>RSS</li>
  <li>API Call </li>
  <li>Socket.IO</li>
  </ul>
  
  <p>I would like to know if there are other ways and which one is the best or recommended by Wikidata</p>