title: re-enable button @click.once after clicking
body: <p>I'm building an app with VueJs 2  + vuetify.
  I have a popup menu with a button that I want to be only clickable one time for each appearence of the popup...</p>
  
  <p>I tried using the <code>@click.once</code> on the button, which work great for the first click, but I can't find a way to <em>reset</em> the button so it is clickable again when the menu is displayed a second time.</p>
  
  <pre><code>&lt;v-dialog
          v-model="dialogDeploy"
          width="500"
          persistent
          lazy
        &gt;
  
  ...
              &lt;v-btn
                color="success"
                flat
                :loading="loading"
                @click.once="deploySnapshot"
              &gt;
                Deploy
              &lt;/v-btn&gt;
  </code></pre>
  
  <p>dialogDeploy equals <code>false</code>, and is switched to <code>true</code> to display the menu, and gets back to false when the button is pressed.</p>
  
  <p>What is the right way of doing this ? 
  Is there a way to reset the <code>once</code> property ? </p>
  
  <p>I know the other solution is to use a <em>true/false</em> data variable to set the button active or not... but I thought using the <code>once</code> property would be good too...</p>
  
  <p>Thanks</p>