----- * moved list_type class to helpers module * added one_of helper function
1.0.1
----- * Model will now raise ValueError for failed attributes with a list instead of a string. * Attributes now allow an alias as keyword argument.
1.0.0
----- * removed the AttributeList class, use functions instead. * Model Attributes can now be named. To allow this we keep the Attribute object and store the value.