1.6.0

• Added security recommendations
• Radically simplified getting started docker-compose tutorial
• Added docker-compose file without the worker
• Added one command example cluster run script & instructions
• Updated prereqs
• Added balena.io to the compare table
• Updated API examples to more clearly show where the app_name should go in the examples
• Added /prune endpoint
• Cleared up how to use the Dockerfile healthcheck integration
• Multiple small changes