title: v-checkbox object model with vuetify
body: <p>Are v-checkbox vuetify components not working as expected? I'm trying to set an object as value but it seems to not works as I want, did I set something wrong?</p>
  
  <pre><code>&lt;div id="app"&gt;
    &lt;v-app id="inspire"&gt;
      &lt;v-container fluid&gt;
        &lt;p&gt;{{ selected }}&lt;/p&gt;
        &lt;v-checkbox v-model="selected" label="A" value="A"&gt;&lt;/v-checkbox&gt;
        &lt;v-checkbox v-model="selected" label="my Object with v-checkbox" :value="{ 'id': 1, 'subId': 12 }"&gt;&lt;/v-checkbox&gt;
  
  &lt;label&gt;
      &lt;input type="checkbox" :value="{ 'id': 1, 'subId': 12 }" v-model="selected"&gt;
      my Object with input type checkbox
  &lt;/label&gt;
  
      &lt;/v-container&gt;
    &lt;/v-app&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>JS:</p>
  
  <pre><code>new Vue({
    el: '#app',
    data () {
      return {
        selected: ['A', { "id": 1, "subId": 12 }]
      }
    }
  })
  </code></pre>
  
  <p>Codepen: <a href="https://codepen.io/anon/pen/OZYzYw?&amp;editors=101" rel="nofollow noreferrer">https://codepen.io/anon/pen/OZYzYw?&amp;editors=101</a></p>