Added a filter method to dicts
The best way to explain this is probably with an example:
>>> split({'foo':'bar', 'bar':['one', 'two'], 'baz': ['three', 'four']})
[{'bar': 'one', 'foo': 'bar', 'baz': 'three'},
{'bar': 'two', 'foo': 'bar', 'baz': 'three'},
{'bar': 'one', 'foo': 'bar', 'baz': 'four'},
{'bar': 'two', 'foo': 'bar', 'baz': 'four'}]
Patch by: Sverre Rabbelier
"""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