Bump eslint from 3.19.0 to 4.18.2 (#32)

Bumps [eslint](https://github.com/eslint/eslint) from 3.19.0 to 4.18.2.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v3.19.0...v4.18.2)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -68,7 +68,7 @@
     "css-loader": "^0.26.1",
     "cz-conventional-changelog": "^1.2.0",
     "directory-tree": "^2.0.0",
-    "eslint": "^3.14.0",
+    "eslint": "^4.18.2",
     "eslint-config-standard": "^6.0.0",
     "eslint-plugin-babel": "^4.0.0",
     "eslint-plugin-mocha": "^4.8.0",