Introducing concept of mutation

which appears to delay the onset of stasis until about twice as many
generations (???)

conway/go/conways-game-of-life/main.go

@@ -14,6 +14,7 @@ import (
 var (
 	height  = flag.Int("height", 40, "Game height")
 	width   = flag.Int("width", 80, "Game width")
+	mutate  = flag.Bool("mutate", false, "Mutate every other generation")
 	sleepMs = flag.Int("sleep.millis", 200,
 		"Millisecond sleep interval per generation")
 )
@@ -34,6 +35,9 @@ func main() {
 		fmt.Printf("\nGeneration %v\n%v\n", generations, now)
 		fmt.Println(game)
 		game.EvaluateGeneration()
+		if *mutate && generations%2 == 0 {
+			game.Mutate()
+		}
 		generations++
 	}
 }