Add Game class
Unicode characters for tokens
Printing board and winning in the right order
Smarter opponent, 1-ordering
Better winner/game separation
Ability to draw
1 move look ahead AI + cleanup
Mode select and the beginnings of minimax
Switch back to 0-indexing
Computer plays minimax
Cleanup, far from perfect
Abstract out the get_lines function and introduce a crude heuristic function for the AI minimax