I just pushed up my most recent changes, including a new setting for quick moving pieces that only have one legal move. You can enable it at the bottom of the settings page. I think it streamlines play quite a bit but it defaults to off to prevent confusion. Also arrows now indicate missed captures which should help prevent confusion for new players. And lastly I fixed quite a few bugs to make exploring the puzzle solutions more consistent.
But as with any code change there exists the likelihood of new bugs. So if you see anything strange, post it here or shoot me an email. Thanks and have fun!