title: Element-ui - disable animation on el-tag
body: <p>I've been digging into the code, but can't figure out where the on-enter animation is coming from:</p>
  
  <p>Here's a fiddle: <a href="http://jsfiddle.net/eywraw8t/471037/" rel="nofollow noreferrer">http://jsfiddle.net/eywraw8t/471037/</a></p>
  
  <p>Code of the fiddle:</p>
  
  <p>.html</p>
  
  <pre><code>&lt;div id="app"&gt;
    &lt;input type="checkbox" v-model="showUndone"&gt; &lt;label&gt;Show undone ?&lt;/label&gt;
    &lt;ol&gt;
      &lt;li v-for="todo in todos" v-if="todo.done || !todo.done &amp;&amp; showUndone"&gt;
        &lt;el-tag&gt;{{todo.text}}&lt;/el-tag&gt;
      &lt;/li&gt;
    &lt;/ol&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>.js</p>
  
  <pre><code>new Vue({
    el: "#app",
    data: {
        showUndone: false,
      todos: [
        { text: "Learn JavaScript", done: false },
        { text: "Learn Vue", done: false },
        { text: "Play around in JSFiddle", done: true },
        { text: "Build something awesome", done: true }
      ]
    },
    methods: {
      toggle: function(todo){
          todo.done = !todo.done
      }
    }
  })
  </code></pre>