title: Define a new type of time in golang
body: <p>I want to have a struct like this:</p>
  
  <pre><code>type Person struct {
      Name string
      DateJoined time
  }
  </code></pre>
  
  <p>But this struct will not compile, because there is no type <code>time</code>, isn't it?
  Should I alternatively use a <code>string</code> and insert the time / date information there?</p>