Add workaround for hotreloading when there are no store changes

[ganemone]

When any file is hotloaded in the browser, for example a react component, fusion will re-run the middleware stack. This is the correct behavior as that is what sets up context providers and eventually renders the application. However, in the case of redux, we don't want to recreate the store as it will result in warnings and potential loss of state. This adds a cache in the browser to ensure that you only create your store once.