xtended to add convenience methods, such as
<code>camelize()</code> and <code>fmt()</code>.</li>
<li><code>Function</code> is extended with methods to annotate functions as
computed properties, via the <code>property()</code> method, and as observers,
via the <code>observes()</code> or <code>observesBefore()</code> methods.</li>
</ul>
<p>This is the extent to which Ember.js enhances native prototypes. We have
carefully weighed the tradeoffs involved with changing these prototypes,
and recommend that most Em