title: Stop NatTable from going into edit mode when an editable cell is left-mouse-clicked
body: <p>NatTable's default behavior when an editable cell is left-mouse-clicked is to immediately launch the cell's editor.</p>
  
  <p>Users sometimes left-click simply to toss focus into the table, and then use the arrow keys to navigate around inside of it.  Given the table's default behavior, they first need to dismiss the edit operation via ENTER, ESCAPE, etc. before they can move the cell selection.</p>
  
  <p>I'd like to alter this behavior so that a left-mouse-click selects the cell that was clicked, but does not instigate an edit.</p>