BOSTON — Massachusetts hasn’t executed anyone since 1947, but during most of its history it allowed capital punishment for crimes ranging from murder to witchcraft. Jurors weighing whether Boston Marathon bomber Dzhokhar Tsarnaev should die under the federal death penalty statute or spend the rest of his life behind bars are the latest to do so in a state with a long and tortured history with execution: EARLY DAYS Using death as a punishment was common in the state’s earliest days.