RacingTadpole

// Crockford's new_constructor
// Act III: Function the Ultimate
// yuiblog.com/crockford

function new_constructor(extend, initializer, methods) {
  var func, prototype = Object.create(extend &&
                              extend.prototype);
  if (methods) {
    methods.keys().forEach(function (key) {
      prototype[key] = methods[key];