v4.2.0

• change docker to use port 8080 by default (#638, @acalcutt)
• style: fix lint issues in code (#626 #639, @vinayakkulkarni)
• Add Docker Healthcheck (#636, @zstadler )
• chown /data volume in Dockerfiles (#634, @nbr23 )
• Add .gitattribute (#637, @zstadler )

NOTE - BREAKING DOCKER CHANGE
The default port for the docker image has changed from 80 to 8080. In your docker run command, "8080:80" must be changed to "8080:8080"