Added git ignore rules for IDEA.
Created the test class TicketDispenserTest and added a trivial test.
Added TODO: Depending on a static method violates the Dependency Inversion Principle and Open-Closed Principle.
Added 3 acceptance test TODOs.
Finished TODO: a new ticket should have the turn number subsequent to the previous ticket.
Finished TODO: a new ticket should have the turn number subsequent to the previous ticket from another dispenser.
Working on TODO: after ticket 10 come ticket 11. Wrote intention code for the test of this TODO.
Created class TestingTurnNumberSequence and made it to be the subclass of TurnNumberSequence.
Created and implemented method TestingTurnNumberSequence.setCurrentTurnNumber().
Made the field TurnNumberSequence.turnNumber accessable for its subclass.
Created and implemented constructor TicketDispenser(TurnNumberSequence).
Created and implemented constructor TicketDispenser().
Finished TODO: Depending on a static method violates the Dependency Inversion Principle and Open-Closed Principle.
Made method TurnNumberSequence.getNextTurnNumber() return the calculated turn number.
Finished TODO: after ticket 10 come ticket 11.