The Addison TreeHouse welcomed Julie Lenzer Kirk, Office of Innovation an Entrepreneurship director at the U.S. Department of Commerce, who took some time to discuss the state of the Dallas-Fort Worth startup community before the incubator's grand opening celebration. The TreeHouse is the product of a collaboration between the Dallas Entrepreneur Center and the Addison Economic Development Department. Kirk was appointed to her position in Washington, D.C., in May and is charged with overseeing…