create a car with its base attributes

	* the base attributes sent through are make, model, and year
	* I also created all of the files needed for this assignment
begin depricate functions

	* they aren't too pretty right now and pseudo work
calculate current_value

	* took me a loooong time to re-figure out how to calculate
	* a depreciating value, but when it suddenly popped back
	* into my head this went quick
car class is functioning completely to spec
create a new UsedCar and successfully pass through mileage as optional
calculate mileage deprecation price for UsedCar
UsedCar is now up to spec
	* takes a mileage
	* calculates mileage deprecation
	* calculates new current value based on that deprecation
	* calculates new price based on new current value
create CarModule module, currently not able to reference it