Generate all positions and tiles as tuples of (row,col), tile.

        docstring to make my IDE stop assuming tile is a standard dtype. sorry!
        :rtype : tuple

def positions_with_tile(self):
        """Generate all positions and tiles as tuples of (row,col), tile.

        docstring to make my IDE stop assuming tile is a standard dtype. sorry!
        :rtype : tuple
        """
        for p, tile in numpy.ndenumerate(self._array):
            yield p, tile