Release 3.0.0

Added

• Snyk badge
• node_js v12 support in .travis.yml

Updated

• eslint@5.16.0
• eslint-plugin-jsdoc@7.0.2
• eslint-plugin-node@9.1.0
• grunt@1.0.4
• load-grunt-tasks@5.0.0
• snyk@1.167.2

Removed

• node <8 support