By Joseph Salvador The Patriots quarterback said he changed his diet and started to take better care of himself. View the original article to see embedded media. Patriots quarterback Mac Jones showed up to his team’s organized team activities Monday noticeably slimmer and in better shape than in his rookie year. “He’s in the best shape of his life,” receiver Kendrick Bourne said Monday, per ESPN. “He looks really good. His stomach is gone.” The 214-pound signal-caller told reporters he cleaned up what he ate and learned more about taking care of his body this offseason, but added that it’s imp…