Actually I wanted to wait before posting it here on PGD until the bugfixed version is released. I was sure there were errors in the version I'd initially release and that was the case, so I'd thought to wait until making it "too" public, but since you already posted it

All bugs reported until now have been fixed, and I plan on releasing the bugfixed version this weekend (unless some more bugs surface), so if those interested could wait that "long" I'd would be great, so they have a rather stable experience with the PlayGround.