Hello Christoph,
WebWasher told me that their patches have not been ready to be deployed for production use. So it's a dead-end project. Never versions are not supposed to come.
Olivier Girondel has written a new set of patches that he says are working fine. He has already submitted the changes to the development team. If you want to get him personally you may want to join #squid on freenode.net. He usually attends there.
Thanks for the feedback! Do you have any contact address of Olivier Girondel? I'm not on IRC, so an e-mail contact would be great.
Thanks! Florian
