Refactor API to support game engine features

[trevorld]

• Would be cool if we could support interactive game play...

[trevorld]

We'd want functions that:

• Compute Game State

• Return the legal moves

• Apply move

  • Usually "human" would pick this

• Generate move

  • Basic would be randomly pick one of legal moves
  • Usually "computer" would pick this

• Generate game

  • Basic while game not over generate move

• Calculate if game is over

  • Basic if no legal moves left

• Calculate "score" of game

• Return PPN of Game State