committed yet again
various pep8 fixes
more pep8
removed _missing, added anything
added decorator mention to priority
adding copyright
onelining shortcircuit
__workflowtag__ -> _workflow_tag
DebugTrace -> debug_trace
collapsed value checking some in decorated_with_option
Stats -> stats
wf_SETUP_DEBUG_TRACE -> wf_setup_debug_trace
priority now has a notion of highest
doShortCircuit -> do_short_circuit
ShortCircuit -> short_circuit
Failed -> failed
Debug -> debug
Options -> options
minor docstring update
FinalState -> final_state