Processes queued up write requests asynchronously to Tensorboard.

def _queue_processor(self)->None:
        "Processes queued up write requests asynchronously to Tensorboard."
        while not self.stop_request.isSet():
            while not self.queue.empty():
                if self.stop_request.isSet(): return
                request = self.queue.get()
                request.write()
            sleep(0.2)