I have already

• added a basic .editorconfig in Secret callback revisited #480
• made a PR to upgrade to the latest Node-versions in Updated travis config according to the latest release-schedule of node #470
• made a PR for adding code-coverage with Istanbul in Added Istanbul to check test-coverage #468

I'd like to add two more things to make working on this repository a little bit easier

• change the jshint-config to a eslint-config
• change travis configuration to the following buildsteps (and change the package.json accordingly)

1. test
2. coverage
3. nsp
4. lint

Would this be a good idea to do?