title: Dynamically change the firestoreConnect query
body: <p>I would like to use pagination in my reservation app (React), where user can choose between building floors with pagination. I am using firestoreConnect to get data from firestore. The query looks like this</p>
  <pre><code>export default compose(
      connect(mapStateToProps, mapDispatchToProps),
      firestoreConnect([
          {
              collection: 'Building1',
              doc: 'Floor1',
              subcollections: [{ collection: 'Seats1' }],
              storeAs: 'Seats1',
              orderBy: ['order']
  
          },
          { collection: 'reservations' }
      ])
  )(ReservDesk)
  </code></pre>
  <p>I am wondering if there is a possibility to dynamically change the collection name and the document name so if I click on page 2 than the first document changes from Floor1 to Floor2 and the subcollection changes from Seats1 to Seats2.</p>