The enemies list is long in New England, and it grows with each tweet that dares to doubt Tom Brady’s supremacy or call coach Bill Belichick a cheater. But there’s one opponent who has escaped the fury of the Foxborough fans, and even has a considerable amount of goodwill in the heart of New England. In fact, it’s hard to find any kind of animosity toward Atlanta Falcons quarterback Matt Ryan, who built his reputation — personally and professionally — at Boston College.