Update futures, actix and request to next major version, refactor to use async/await

src/config.rs

@@ -48,7 +48,7 @@ pub(crate) struct Opt {
     pub(crate) logfile: PathBuf,
 }
 
-pub(crate) fn init() -> Result<()> {
+pub(crate) async fn init() -> Result<()> {
     std::env::set_var("RUST_LOG", "actix_web=info,hoc=info");
     // pretty_env_logger::init();
     openssl_probe::init_ssl_cert_env_vars();