After writing last week about the bitter feelings of regret that permeate Ernest Hemingway's "The Snows of Kilimanjaro,” I found myself wanting to explore this emotion from a different angle. My choice this week is "Feathers” by Raymond Carver, a story that is both odd and deeply moving. "Feathers” opens Carver's 1983 collection Cathedral. I have had this book for years and have read some of the stories, but I had never read this one until now. Carver, a master of the short s