title: Using toFixed(2) and math round to get correct rounding
body: <p>I would like to find a function that will return this kind of formatted values :</p>
  
  <pre><code>1.5555 =&gt; 1.55
  1.5556 =&gt; 1.56
  1.5554 =&gt; 1.55
  1.5651 =&gt; 1.56
  </code></pre>
  
  <p>toFixed() and math round return this value :</p>
  
  <pre><code>1.5651.fixedTo(2) =&gt; 1.57
  </code></pre>
  
  <p>This will be usefull for money rounding.</p>