Has now been ported to SDL2, which should improve portability, especially on Mac OS X, which is now using native graphics (instead of X11) and is packaged as an application bundle.
With many other changes, this might not be the most reliable of releases, but since the last release was the 10th anniversary release, I figure the best we can do for Quadra is to release earlier, and rather than try to get everything perfect, be ready to fix it in quick follow up releases.