title: Make a qml 2d flickable only scroll in one dimension at once
body: <p>To better understand the behavior I am looking for, look at google calendar on android:</p>
  
  <p><a href="https://i.stack.imgur.com/0uzGF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0uzGF.png" alt="Calendar on android"></a></p>
  
  <p>One can scroll downward to later times of the day. One can scroll left and right to different dates. But once one starts scrolling horizontal or vertical, one can not scroll in the other dimension without first stopping the current scroll.</p>
  
  <p>How can I reproduce this behavior using a flickable in qml?</p>