Team 4 - Christine and Michael

Did you guys test any programs that shouldn't parse? I know when we used this format originally, ```.get``` would throw an error along the lines of "can't get results of failed parse", but not actually say what the failure was, so it may be that your nice failure messages are being lost. Instead you can match ```PiconotParser(program)``` against ```Success(parsedProgram, _)``` and ```NoSuccess(message, _)```