Convert all fractional coordinates to cartesian.

def frac2cart_all(frac_coordinates, lattice_array):
    """Convert all fractional coordinates to cartesian."""
    coordinates = deepcopy(frac_coordinates)
    for coord in range(coordinates.shape[0]):
        coordinates[coord] = cartisian_from_fractional(coordinates[coord],
                                                       lattice_array)
    return coordinates