v0.15.0

• Adds the ability to pass Harvey configuration data in a data field in the webhook instead of the default harvey.json configuration file kept in the repo (either are now options)
• Configuration data now properly gets validated (pipeline key and existence)
• Added emojis to the healthcheck messages via Slack
• The pipelines and stages modules were consolidated into pipelines now that the testing functionality has been removed
• Removed the filter webhook functionality as it was prohibitively expensive to do correctly due to the vast number of IPs to guard against
• Reworked how we pulled json data from webhooks to be more straightforward
• We now use the docker Python SDK instead of hitting raw socket endpoints (closes #49)
• Adds gunicorn for production deployments instead of the development Flask server
• Refactors invocations of subprocesses to not use the shell, no longer change directories but invoke commands from within the context they require
  • Changes the compose key to prod_compose which now accepts a boolean. We no longer support custom flags to the compose endpoint
• Removes deprecated /compose endpoint which has been replaced with the /start endpoint
• Adds a new healthcheck key on the config which accepts an array of container names to check for when deploying. Harvey will attempt to run healthchecks against these containers and retry a few times if they are not yet running. The pipeline will only show as success if we can only get a good healthcheck from the list of containers provided. This new option now allows healthchecks to be run against all containers in the stack instead of the base app alone (great for adding databases, caches, and other containers you may have)
• Various bug fixes