1.6.0

Minor improvements to computer move algorithm.

1.5.1

Minor change to make computer play random move for first move. This increases variety of play.

1.5.0

Changes to computer move logic to improve its play.

1.4.0

Updates to improve algorithms for computer play.

1.3.0

Update to add selectable difficulty level, now that the game is fairly hard to play.

1.2.0

Improved algorithm to make computer harder to play. Computer now favours moves that leave the opponent with fewer options.

1.1.0

The algorithms for the computer to select its move have been improved. To make it better at keeping and taking an edge.

v1.0.0

This is the initial release after review and testing.