Google Colaboratory https://colab.research.google.com/drive/1mz_xwsp4hKhATCPcrblmgdyxLQnVqKnu
https://colab.research.google.com/github/ageron/julia_notebooks/blob/master/Julia_Colab_Notebook_Template.ipynb https://qiita.com/Shoichiro-Tsutsui/items/b2ff07f62d1ca12122bc
