fix exports
change constructor for calculator
modified commandline processor to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor
modifed test to handle new constructor