message: Fix Pulse Scheduler (pulse start time)
diff: @@ -33,7 +33,7 @@ void PulseScheduler::schedule(std::shared_ptr<CompositeInstruction> program) {
  auto pulse = std::dynamic_pointer_cast<Pulse>(nextInst);
  auto duration = pulse->duration();
  auto currentTimeOnChannel = channel2times[pulse->channel()];
  - pulse->setStart(currentTimeOnChannel+duration);
  + pulse->setStart(currentTimeOnChannel);
  channel2times[pulse->channel()] += duration;
  }
  }
  