Kansas City Star: Last year, Kansas backers of coal-burning power plants were like Sisyphus in mythology, doomed to roll a boulder up an incline again and again. Lawmakers kept passing bills to get the plants built in western Kansas, then saw Democratic Gov. Kathleen Sebelius wield her veto pen and kick the big rock down again. This year they`re at it again. But has anything changed? As it turns out, plenty. New leadership in the Kansas House. Changes in tactics by plant …