v4.0.0

• Breaking: require node 10 08a5237
• Bump dependencies ace0d5b
• Merge pull request #227 from bezoerb/dependabot/npm_and_yarn/acorn-7.1.1 e219ab7
• chore(deps): bump acorn from 7.1.0 to 7.1.1 af24042

v3.0.9...v4.0.0