title: Boolean value gets transformed to a String
body: <p>I have an radio input component:</p>
  <pre><code>&lt;input
    type=&quot;radio&quot;
    :value=&quot;true&quot;
    v-on=&quot;{
      ...$listeners,
      input: (event) =&gt; { someMethod(event) }
    }&quot;
  &gt;
  </code></pre>
  <p>The method:</p>
  <pre><code>methods: {
    someMethod (event) {
      console.log(event.target.value === 'true')
    }
  }
  </code></pre>
  <p>I would expect the value to be a boolean value and not a string because of the <code>:value=</code> syntax.</p>