What is the difference between react-navigation's StackNavigator and SwitchNavigator? : <p>As of this writing, the <a href="https://reactnavigation.org/docs/switch-navigator.html" rel="noreferrer">Docs</a> don't provide a description of <code>SwitchNavigator</code>'s purpose.</p>

<p>I've tried using both <code>StackNavigator</code> and <code>SwitchNavigator</code> interchangeably and I personally cannot spot a difference. <em>Although I'm certain there is.</em></p>

<p>Can anyone explain what the added benefit of <code>SwitchNavigator</code> is over <code>StackNavigator</code> ? Or a scenario where one might use it over the other?</p>
