Seven-time Tour de France champion Lance Armstrong made two significant announcements Monday regarding his future. He and rock star Sheryl Crow are engaged and are planning a spring wedding. And Armstrong confirmed that he is "thinking" about coming out of retirement and defending his Tour yellow jersey. Armstrong made these relevations during an interview with the American-Statesman. [. . .] Armstrong has only entertained the idea of riding the Tour next July for about the last two weeks. He first started mulling the idea after a French newspaper reported Aug. 22 that Armstrong tested positive six times for a banned...