title: Decimal as first character in a number input field
body: <p>I have a <code>&lt;input type="number"&gt;&lt;/input&gt;</code> field and when I try to put in a decimal as the first character, it comes up as invalid (I have an ng-change firing).</p>
  
  <p><code>.5</code> won't work, but <code>0.5</code> is valid. Is there something I can do about this?</p>