Hey
I just uploaded a beta here: https://www.arongranberg.com/astar/download (click on ‘show older versions’ and download the spherical beta).
I also wrote a small (work in progress) tutorial page for it. Take a look at this page: https://www.arongranberg.com/astar/documentation/spherical_4_1_20_17f940b2/spherical.html)