quick and dirty removal of stacks
halfway through (in terms of operators ;-) proactive compilation
Fleshing out sequential and parallel composition.
some more progess on compilation
Ignore .pyc and .swp files.
Filled in the specialization helper for sequential composition.
Sequential composition.  Not rigorously tested.
Added a quick and dirty classifier optimization.
removing ExactMatch and PrefixMatch in favor of object-based matching
prettier and more printing
removed print statment that shouldn't have been checked in
Improved logic for combining action lists
fixed bug where case a1 == identity not hit when it should be
I think this is a bug (but am not certain - Cole?)
Fixed bug in assert - empty parallel is allowed, it is just equivalent to drop
Fix bug in compile for negate where empty modify wasn't treated like identity
Fix bug in compile where match incorrectly returned as drop
don't compile policies with queries
fix bugs w/ matching and clean code
support for rule priority