Violation of protective order or stalking; third or subsequent offense. Expands the offenses for which a conviction of a third or subsequent offense, when the offense is committed within 20 years of the first conviction and when either the instant or one of the prior offenses was based on an act or threat of violence and the instant and prior offenses arise out of separate incidents, is a Class 6 felony with a mandatory minimum term of confinement of six months from violating a protective order to any combination of violating a protective order or stalking.