HtmlSanitizer becomes Python 2.6 compatible.
The Cleaner class must not have any arguments when calling __init__ function for the object class, because in this case Python 2.6 raises TypeError (while previous versions just ignored them).
"""Multi-consumer multi-producer dispatching mechanism
Originally based on pydispatch (BSD) http://pypi.python.org/pypi/PyDispatcher/2.0.1
See license.txt for original license.
Heavily modified for Django's purposes.
"""
from django.dispatch.dispatcher import Signal