Remove print statement in astar.py

[MalloryWittwer]

Hi! I think it would be good to remove the print statement "Found goal!" in astar.py. In certain applications where the algorithm runs in a loop, the message gets printed continuously, which makes debugging difficult. Thank you!

[cudmore]

Thanks for the feedback. We removed the Found Goal! by default but it can be optionally turned back on. Our search function now looks like this

    def search(self, verbose : bool = False) -> List[np.ndarray]:
        """Performs A star search to find the brightest path

        Parameters
        ----------
        verbose (bool)
            If True, will print `Found goal!` when goal is found.

        Returns
        -------
        List[np.ndarray]
            the list containing the 2D/3D point coordinates
            that constitute the brightest path between the
            start_point and the goal_point

[MalloryWittwer]

That's awesome! Thank you for making these changes.