fixed removal from empty array bug
adding arrival handler
Customer now an abstract class. customer type A and B created
add to queue added to Register
single customer approach handling
fixed compare bug in importer
added trainee class extension to Cashier
fixed loop conditions(stopped acting broken)
basic functionality
handles type A and B arriving at different times. Test Files added
cashier tests complete
customer A tests completed
fixed cashier tests
Example 2 solved tests passing
added handler class and tests
refactor
example 3 running
added register Handler class
added CustomerQueueBuilder
Full functionality complete