Rules based on: http://www.bicyclecards.com/how-to-play/blackjack/
Please run client code (blackjack.py) through command line, and follow the instructions.
Gamer(Dealer, Player)
Card
CardDeck
GameTable
BlackjackManager
A Dealer/Player is a Gamer.
A CardDeck has a specified amount of Cards.
A GameTable has one Dealer, Multiple Players and a CardDeck.
A BlackjackManager has a GameTable.
BlackjackManager runs a GameTable, decides the winner in each single play, and terminates when there are no Players.
BlackjackManager shuffles the CardDeck when the system starts, or when there are less than 60 cards left.
GameTable joins or leaves Gamers.
The Dealer and multiple Players play a CardDeck with their own strategies.
The Dealer serves and deals with Players.
Players place bet, and make decisions in each single play.
Players choose to leave the GameTable, or forced to leave once below a certain amount of chips.