`blockstackAuth` object currently lives in `src/app.js` - [ ] Should it be a separate service/singleton fore re-use? - [ ] Use state-management library like [Redux](https://redux.js.org/) or start using [Hooks](https://reactjs.org/docs/hooks-intro.html)? Related to: - https://github.com/blockstack/blockstack.js/pull/542 - https://forum.blockstack.org/t/proposal-giving-control-of-session-state-to-app-developers/6006/20?u=larry
