Inspiration - quosi/playJava GitHub Wiki
- https://ssaurel.medium.com/creating-a-connect-four-game-in-java-f45356f1d6ba
- https://github.com/bellyflopp/Connect-Four/blob/master/src/Board.java
- https://www.youtube.com/watch?v=s-6t7FGbPAI
- https://www.youtube.com/watch?v=B5H_t0A_C14
- https://github.com/waiyeung/Connect-4-Game/blob/master/UML%20Class%20Diagram.pdf
- https://github.com/AlmasB/FXTutorials/blob/b616a09e65913b5783b4f71d68cc23dba9e009d4/src/main/java/com/almasb/connect4/Connect4App.java