title: Vue: Delay option not working with v-popover
body: <p>I use <a href="https://akryum.github.io/v-tooltip" rel="nofollow noreferrer">v-tooltip</a> to create a clickable popover. I'd like the popover to remain visible for a few seconds even if the mouse leaves both the popover and the element triggering it (the button in my example).</p>
  
  <p>This is a simplified example from my code:</p>
  
  <pre><code>&lt;v-popover trigger='hover' delay='{ show: 250, hide: 5000 }'&gt;
  
      &lt;!-- Popover target --&gt;
      &lt;button type='button'&gt;x&lt;/button&gt;
  
      &lt;!-- Content of popover --&gt;
      &lt;template slot='popover'&gt;
          &lt;p&gt;###&lt;/p&gt;
      &lt;/template&gt;
  &lt;/v-popover&gt;
  </code></pre>
  
  <p>My problem is that the delay attribute does not have any effect. <code>trigger='hover'</code> is working (otherwise the popover would only show on click), but the popover vanishes as soon as I move the mouse away. Shouldn't it remain visible for 5 seconds?</p>