Hi, This one has seen the last actual code change in... 2011. No one has bothered to even make it independent from kdepimlibs-4, which itself has not been released anymore since 4.14.10, more than a year ago. There is no frameworks branch. I'd say, for anyone still depending on user/group management by kuser, they can always pick it from 16.08. And maybe then that someone decides to pick up development once again.
Regards, Andreas