title: Unable to parse xml in GO with : in tags
body: <p>I find that if tags in XML file have <code>:</code> in them the unmarshal code in Go does not seem to work. Any insights ?</p>
  
  <p>For example, in the XML file below, <code>Summary</code> works but not <code>Cevent</code>. </p>
  
  <pre><code>&lt;summary&gt;...AIR QUALITY ALERT &lt;/summary&gt;
  &lt;cap:event&gt;Air Quality Alert&lt;/cap:event&gt;
  </code></pre>
  
  
  
  <pre><code>type Entry struct{
      Summary    string   `xml:"summary"`
      Cevent     string   `xml:"cap:event"`
  }
  </code></pre>