An in-range update of immer is breaking the build 🚨

## The dependency [immer](https://github.com/mweststrate/immer) was updated from `1.7.4` to `1.8.0`.

🚨 [View failing branch](https://github.com/epeli/redux-stack/compare/master...epeli:greenkeeper%2Fimmer-1.8.0).

This version is **covered** by your **current version range** and after updating it in your project **the build failed**.

immer is a direct dependency of this project, and **it is very likely causing it to break**. If other packages depend on yours, this update is probably also breaking those in turn.

Status Details

- ❌ **Travis CI - Branch:** The build **failed**.

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