Will Butler

The app name for review apps is generated and stored in the `HEROKU_APP_NAME` env var. It would be nice if `workless` could fallback to that variable if `APP_NAME` is empty.

## Who/What do you want to be featured? Vivy ### What do they look like?    ## What type of theme? - [ ] Light Theme - [X]...

Works with the set-cookie value as an array or a string. Fix for https://github.com/pschinis/rails_same_site_cookie/issues/33.