https://colab.research.google.com/github/teddylee777/machine-learning/blob/master/04-TensorFlow2.0/01-%EC%82%BC%EC%84%B1%EC%A0%84%EC%9E%90-%EC%A3%BC%EA%B0%80%EC%98%88%EC%B8%A1/02-LSTM-stock-forecasting-with-LSTM-financedatareader.ipynb#scrollTo=L6_baA6dvBie