A state task force released a list of 21 recommendations Thursday aimed at combating sexual assault on college campuses, a set of policy proposals Gov. Terry McAuliffe said would help make Virginia a “national leader” on the issue. McAuliffe established the task force in August, but it took on added urgency due to the subsequent slaying of University of Virginia student Hannah Graham and publication of a sensational article in Rolling Stone about an alleged gang-rape at UVa.