V0.4 peanuts flexible events module

with the new implementation, we can dry out the core extensions. e.g. in store.js, instead of 

```js
// trigger
  // ---------

  // proxies to hoodie.trigger
  api.trigger = function trigger() {
    var eventName = arguments[0];
    var parameters = 2 <= arguments.length ? Array.prototype.slice.call(arguments, 1) : [];
    var prefix = storeName;

    return hoodie.trigger.apply(hoodie, [prefix + ':' + eventName].concat(Array.prototype.slice.call(parameters)));
  };


  // on
  // ---------

  // proxies to hoodie.on
  api.on = function on(eventName, data) {
    var prefix = storeName;

    eventName = eventName.replace(/(^| )([^ ]+)/g, '$1'+prefix+':$2');

    return hoodie.on(eventName, data);
  };


  // unbind
  // ---------

  // proxies to hoodie.unbind
  api.unbind = function unbind(eventName, callback) {
    var prefix = storeName;

    eventName = eventName.replace(/(^| )([^ ]+)/g, '$1'+prefix+':$2');
    return hoodie.unbind(eventName, callback);
  };
```

we now can do

```js
hoodieEvents(hoodie, { context: api, namespace: storeName })
```