A Kennewick accounting firm has sold itself, a move that ensurescontinuity for the 500 or so clients who depend on Marple & Marple CPAs tomanage their books and prepare their taxes.Richland-based PorterKinney PC bought Marple & Marple on Nov. 14. The move dramatically expanded PorterKinney’s footprint, giving it a newKennewick...