Decompresses the [response](https://nodejs.org/api/http.html#http_class_http_incomingmessage) from [`http.request`](https://nodejs.org/api/http.html#http_http_request_options_callback) if it's gzipped or deflated, otherwise just passes it through.
Used by [`got`](https://github.com/sindresorhus/got).