Bump to 1.10.0-4

Update README.md

Bump to 1.10.0-2

Bump to Airflow 1.10.0

Bump to 1.9.0-4

Fix issue running docker-airflow without compose (SequentialExecutor)

Bump to 1.9.0-2

Merge pull request #143 from Fokko/update-to-airflow-19

Update to Apache Airflow 1.9

Merge pull request #114 from puckel/v1.8.2

Bump to 1.8.2

Update to python 3