Airflow and DataScience from scratch sprint

See details here: https://python-sprints.github.io/london/2019/03/26/airflow.html

In case of waiting list, we give priority to (let us know if it's you):

• People from underrepresented minorities in IT
• Maintainers of open source packages
• Supporting members of NumFOCUS (consider making a donation and becoming one if you're not)
• People visiting from abroad

We fill up spaces bit by bit so please keep an eye out.