More immutable datastructures
board,game: Added new functions and 'Dead' cells.

game: Implements `go` playing and rule book
board: New functions for ease, of usage

Signed-off-by: Harshavardhana <harsha@harshavardhana.net>
Fix pull conflicts

Signed-off-by: Harshavardhana <harsha@harshavardhana.net>