NASHVILLE (AP) — Little Jimmy Dickens, a diminutive singer-songwriter known for his sense of humor and as the oldest cast member of the Grand Ole Opry, has died. He was 94.Dickens died Friday at a Nashville-area hospital of cardiac arrest after suffering a stroke on Christmas Day, Opry spokeswoman Jessie Schmidt said.Dickens, who stood 4-foot-11, had performed on the Opry almost continuously since 1948. His last performance was Dec. 20 as part of his birthday celebration.