v4.1.0-beta.1

This release fixes a couple test-related packages that were accidentally listed as dependencies instead of devDependencies, and adds the sideEffects flag to package.json in case it's useful.

There are no code changes from 4.1.0-beta.0: https://github.com/reduxjs/reselect/releases/tag/v4.1.0-beta.0

npm i reselect@next

yarn add reselect@next

Full Changelog: v4.1.0-beta.0...v4.1.0-beta.1