Inspiration for refactor:
https://github.com/triestpa/Vue-Chess/blob/master/src/components/chessboard/chessboard.js
https://github.com/gustaYo/vue-chess
Inspiration for refactor:
https://github.com/triestpa/Vue-Chess/blob/master/src/components/chessboard/chessboard.js
https://github.com/gustaYo/vue-chess