Changes

'''calage([date of birth])''' - Calculates the number of full years between the current date and the date included in the function. '''calage([date of birth],1)''' - Calculates the number of years and months between the current date and the date included in the function as a floating point.'''calage([date of birth],2)''' - Calculates the number of years and months between the current date and the date included in the function as the string "X years and Y months".