message: Don't count nacks for deli op events
diff: @@ -288,13 +288,13 @@ export class DeliLambda extends TypedEventEmitter<IDeliLambdaEvents> implements
  };
  }
  }
  +
  + sequencedMessageCount++;
  }
  // Update the msn last sent.
  this.lastSentMSN = ticketedMessage.msn;
  this.lastSendP = this.sendToScriptorium(ticketedMessage.message);
  -
  - sequencedMessageCount++;
  }
  kafkaCheckpointMessage = this.getKafkaCheckpointMessage(rawMessage);
  