Implemented reservation changing by removing the old reservations to the
new reservations with the new requirements.
Implemented reservation changing.
Created a getter for reservation list so that the printer can do works
on it.
Moved reservations printer to Printer class to write to text file.
Replace any console logging to writeToFile() to write to text.
Fix up code.
Output file for the basic test cases.
Changed inputs to the original as downloaded from assignment site.