Extend taggable-mixin to support different Tag models. Usage is pretty simple. Tag model is default in Taggable constructor but you can call it with different model like GHOPTaskType that inherits from Tag model. Both Taggable and Tag models have been updated and they don't use hardcoded Tag model anymore and instead use cls of class methods or self.__class__. In case of Taggable it's self.__tag_model.

"""
Django validation and HTML form handling.

TODO:
    Default value for field
    Field labels
    Nestable Forms
    FatalValidationError -- short-circuits all other validators on a form
    ValidationWarning
    "This form field requires foo.js" and form.js_includes()
"""

from util import ValidationError
from widgets import *
from fields import *
from forms import *
from models import *