Add support for passing arguments to tmux (fix #236) (#250)

src/main.rs

@@ -79,7 +79,7 @@ fn run() -> Result<(), Error> {
     if config.run_in_tmux() && env::var("TOPGRADE_INSIDE_TMUX").is_err() {
         #[cfg(unix)]
         {
-            tmux::run_in_tmux();
+            tmux::run_in_tmux(config.tmux_arguments());
         }
     }
 
@@ -142,6 +142,7 @@ fn run() -> Result<(), Error> {
                             remote_topgrade,
                             config.ssh_arguments(),
                             config.run_in_tmux(),
+                            config.tmux_arguments(),
                         )
                     },
                     config.no_retry(),