* Bump eslint from 4.19.1 to 6.5.1

Bumps [eslint](https://github.com/eslint/eslint) from 4.19.1 to 6.5.1.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/eslint/eslint/compare/v4.19.1...v6.5.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* better ignore rules for eslint

* set ecmascript version to support object spread operator