title: Ionic datepicker min & max don't work on month & day
body: <p>I'm trying to use ionic 2 datepicker, it works but when I want to use min &amp; max properties it doesn't work.</p>
  
  <pre><code>&lt;ion-datetime displayFormat="DD-MM-YYYY"  [min]="event.date.today" [(ngModel)]="event.date.start"&gt;&lt;/ion-datetime&gt;
  </code></pre>
  
  <p>It filter date only on years ! But I would like to have custom day and month.</p>
  
  <pre><code>'date': {
      'today': moment().format("YYYY-MM-DD")
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/WMXck.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WMXck.png" alt="enter image description here"></a></p>
  
  <p>Can you help me ?
  Thanks a lot</p>