Perl prereqs (CPAN)
-------------------
Moose
Graph::Directed
Math::Symbolic
Parse::RecDescent
Term::ANSIColor
Time::Progress

Other prereqs
-------------
Swig (requires libpcre, gcc)
prove (for tests)

Instructions
------------
To run tests:
make test

To build (and test) C parser:
make cparser

To run the test/demo grammars:
make turn  (or 'make perl-turn' if cparser not working)
make debug-turn
make convo