Upgrade Instructions
https://github.com/johnsusek/praeco#upgrading
Release Notes
https://github.com/johnsusek/praeco/wiki/praeco-&-elastalert-server-docker-image-relations-table
https://github.com/johnsusek/elastalert-server/blob/master/DockerImageLog.md
- Add GoogleChat support (@abhishek-rio)
- Add Exotel support