Add support for #0 in pure functions (issue #5)
Fix check for out-of-range slot numbers (issue #5)
Style fix
Merge pull request #160 from bnjones/slots

Support #0 in pure functions
Fix Slot[0] not printing as #0
add test for Slot[0] formatting
basic unittesting
run unittests with setup.py test
add basic selenium frontend tests
tidy test_frontend.py
add parser unittests
add simple console unittests