Update core-js to the latest version 🚀 (#1207)

* chore(package): update core-js to version 3.2.0

* chore(package): update lockfile package-lock.json

* Update commander to the latest version 🚀 (#1208)

* fix(package): update commander to version 3.0.0

* chore(package): update lockfile package-lock.json

* Update react to the latest version 🚀 (#1209)

* fix(package): update react to version 16.9.0

* fix(package): update react-dom to version 16.9.0

* chore(package): update react-test-renderer to version 16.9.0

* chore(package): update lockfile package-lock.json

* Update sass-loader to the latest version 🚀 (#1210)

* chore(package): update sass-loader to version 7.2.0

* chore(package): update lockfile package-lock.json

* Update react-dnd to the latest version 🚀 (#1201)

* fix(package): update react-dnd to version 9.3.4

* fix(package): update react-dnd-html5-backend to version 9.3.4

* chore(package): update lockfile package-lock.json

* fix: Breaking changes in react-dnd version 9.x

* fix: Breaking changes in react-dnd version 9.x (#1211)

* update package-loc

* fix: Update PIG examples to work with react-dnd 3.x (#1214)

* fix: Update core-js@3 (#1213)

* Update package-lock

Author: greenkeeper[bot]