By Kelly Geraldine Malone THE CANADIAN PRESS MELFORT, Sask-_ Myles Sanderson and his brother were driving around a Saskatchewan First Nation causing havoc, assaulting people and selling drugs in the days and hours before a mass killing in the community. The first day of a coroner’s inquest into the stabbing rampage saw text messages that Damien Sanderson sent his wife, Skye Sanderson, as the brothers caused chaos in the community. “I’m done ready to die,” Damien Sanderson said in one message on the afternoon before the attacks. RCMP have said Damien Sanderson was the first to be killed by his brother. Myles Sanderson then went on to kill 10 more people and injure 17 others on James Smith Cree Nation and in the nearby village of Weldon on Sept. 4,…