Started to add chains, and coded a neighbours function, to find the Points neighbour of a given Point
Changed the representation of the board to a Vec<Point> instead of a Vec<Vec<Point>> as this representation should be way quicker, according to eddyb of Mozilla fame (CPU caching). Fixed the show() method: It was using the Vec<Vec<Point>> to obtain points instead of the Board.get(col, row) method
Fixed the tests
Added tests for neighbours()
Merge pull request #3 from TisButMe/change_board_representation_to_matrix

Change board representation to matrix