EVERYTHING AT ONCEOver the span of almost three decades, Scottish indie rock stalwarts Travis have persevered, both holding faithful to the sound that they helped break into the U. K. mainstream in the '90s and rocking long enough to watch their sonic progeny spread their wings and fly off in various artistic directions (see: Coldplay, Keane, Snow Patrol). And through it all, Travis remained reliable, seldom veering too far from the center. On their eighth album,