- https://developers.google.com/tasks/auth
- https://stackoverflow.com/questions/19766912/how-do-i-authorise-an-app-web-or-installed-without-user-intervention/19766913#19766913
- https://googleapis.github.io/google-api-python-client/docs/dyn/tasks_v1.html
- https://www.googleapis.com/discovery/v1/apis/tasks/v1/rest