Chicago software firm SAVO Group has acquired Raleigh-based KnowledgeTree. The news comes five months after a serial entrepreneur with an exit history - Sean O'Leary - took the CEO seat at KnowledgeTree. O'Leary was CEO of StrikeIron when it sold to Informatica for $55 million in 2014. O'Leary says the deal, which closed late Friday, wasn't part of his "original plan," but that it's a great opportunity for his team. Financial details were not disclosed. In an interview minutes...