title: selfish how to call parent initializer
body: <p>I'm using selfish javascript library to make inheritance in javascript easier.
  For example I have two Objects</p>
  
  <pre><code>var Foo = Base.extend({
        initialize: function(){
          this.some_param = 1;
        }
      }),
      Bar = Base.extend({
        initialize: function(){
          this.another_param = 2;
        }
      });
  </code></pre>
  
  <p>How to call from Bar initializer the Foo initializer?</p>