I’ve just released version 1.0.4 which include some bugfixes and a new delay parameter for Looper, allowing you to do slideshows. I’ve also got around to finishing the documentation for Morpher, so you can do animations.
I intend this to be the last version of the code in the current state as I want to rewrite Performer completely so it natively works with jQuery (check the stats). I certainly don’t intend dropping support for Prototype and MooTools if I can help it, but I need to go where the developers are. I hope this rewrite will lead to dramatic speed improvements, fewer bugs and more possibilities in the future.