Bloomberg: Canadian Prime Minister Stephen Harper said a new climate change treaty must include all major emitters and take into account the global economic slowdown. “It’s not feasible to have major emitters excluded,” Harper said today in Ottawa during a joint press conference with French Prime Minister Francois Fillon. “We really do need to have everyone in if we are to make long-term progress.” Harper travels to Japan next week for a summit of leaders from the Group of Eight …