- upgrade to latest ember-cli (3.8.1) and upgrade other dependencies
- display output from rsync command when run with --verbose argument
- catch errors from "rsync" command instead of carrying on as though nothing went wrong
- in general, let errors propagate up so they fail the pipeline
- upgrade "ember-cli-deploy-plugin" to 0.2.9
- upgrade to latest ember-cli (2.13.1)
- use ES6 syntax