* raise ArgumentError unless constructor argument isn't Hash
* require all active_model files for support activemodel 4.0.0 *takkanm*

## 0.0.3 (Oct 17, 2012)

* add `#attributes`, returns all filtered attributes *takkanm*

## 0.0.2 (Oct 04, 2012)

* add `attr_hash_accessor`, defines both setter and getter *hibariya*

## 0.0.1 (Sep 25, 2012)

* initial release

