Document RunShutdownable in Run

run.go

@@ -9,7 +9,7 @@ var env environment
 // when all running actors have stopped. Error and log messages will be printed.
 // The correct way to use this function is to have it be the only thing in main:
 // 
-//   func main () {
+//   func main() {
 //           camfish.Run("name", "what it does", new(SomeActor), new(AnotherActor))
 //   }
 //
@@ -50,21 +50,22 @@ var env environment
 //       is configurable, but by default it is 8 minutes. The vast majority of
 //       actors should initialize in under 100 milliseconds.
 //   
-//   70. Running: Actors which implement [Runnable] are run, each in their own
-//       goroutine. The environment is able to restart actors which have failed,
-//       which entails resetting the actor if it implements [Resettable], and
-//       running the actor again within the same goroutine. If an actor does not
-//       run for a meaningful amount of time after resetting/initialization
-//      before failing, it is considered erratic and further attempts to restart
-//      it will be spaced by a limited, constantly increasing time interval. The
-//      timing is configurable, but by default the threshold for a meaningful
-//      amount of runtime is 16 seconds, the initial delay interval is 8
-//      seconds, the interval increase per attempt is 8 seconds, and the maximum
-//      interval is one hour. Additionally, programs which implement [Trimmable]
-//      will be trimmed regularly whenever they are running. The trimming
-//      interval is also configurable, but by default it is once every minute.
-//      When an actor which implements [Resettable] is reset, it is given a
-//      configurable timeout, which is 8 minutes by default.
+//   70. Running: Actors which implement [Runnable] or [RunShutdownable] are
+//       run, each in their own goroutine. The environment is able to restart
+//       actors which have failed, which entails resetting the actor if it
+//       implements [Resettable], and running the actor again within the same
+//       goroutine. If an actor does not run for a meaningful amount of time
+//       after resetting/initialization before failing, it is considered erratic
+//       and further attempts to restart it will be spaced by a limited,
+//       constantly increasing time interval. The timing is configurable, but by
+//       default the threshold for a meaningful amount of runtime is 16 seconds,
+//       the initial delay interval is 8 seconds, the interval increase per
+//       attempt is 8 seconds, and the maximum interval is one hour.
+//       Additionally, programs which implement [Trimmable] will be trimmed
+//       regularly whenever they are running. The trimming interval is also
+//       configurable, but by default it is once every minute. When an actor
+//       which implements [Resettable] is reset, it is given a configurable
+//       timeout, which is 8 minutes by default.
 //   
 //   80. Shutdown: This can be triggered by all actors being removed from the
 //       environment, a catastrophic error, [Done] being called, or the program