I wouldn't be at all surprised to see wikileaks turn on Trump now. Just because the hard left hates and wanted to humiliate Clinton doesn't mean they love Trump.
Assange made several statements that he disliked Trump as much as Clinton, he just didn't think he could find leaks worse than what Trump was saying himself (his words). Assange was a big Jill Stein fan.
However, Wikileaks did serve a purpose to shine a light on a lot of dark reaches of the DNC and Hillary clan.