add test case for `transparent decompression` for `content-encoding` being set in the response headers
add test case for `transparent decompression` for `content-encoding` being set in the response headers

akshatnitd/axios,axios/axios,vandosant/axios,akshatnitd/axios,axios/axios,vandosant/axios,renzhaozhao/axios,renzhaozhao/axios,akshatnitd/axios,mzabriskie/axios,nickuraltsev/axios,mzabriskie/axios,vandosant/axios,renzhaozhao/axios,axios/axios,mzabriskie/axios,nickuraltsev/axios,nickuraltsev/axios