Tic-tac-toe Tic-tac-toe in vanilla JS, HTML and CSS. v1 requirements - there should be a tic-tac-toe grid - players should be able to click on a square to add an 'X' or an 'O' v2 requirements - it should declare the winner if a player gets three of their symbols in a row - it should declare a draw if no player has won by the time the board is filled v3 requirements - it should log a history of the games v4 requirements - there should be an option to play against a computer opponent