Customers

Bug fixes release:

• Fixed customers avoiding picking the same target counter position
• Fixed night shift time range
• Force customers to give up when spawning stops / shift ends
• Customers only collide with other customers and only those that are not done
• Calculate movement max time based on path length if possible to support pathing that isn't a straight shot
• Allow a new customer to spawn as soon as a previous one is done buying
• Only customers that still buying or just arrived count toward max customers limit