new: ``compose up`` now includes ``--remove-orphans`` by default.

bin/compose-core

@@ -3661,10 +3661,14 @@ export SERVICE_PACK="${services_args[*]}"
 case "$action" in
     up|start|stop|build|run)
         ## force daemon mode for up
-        if [[ "$action" == "up" ]] && ! array_member action_opts -d; then
-            action_opts+=("-d")
+        if [[ "$action" == "up" ]]; then
+            if ! array_member action_opts -d; then
+                action_opts+=("-d")
+            fi
+            if ! array_member action_opts --remove-orphans; then
+                action_opts+=("--remove-orphans")
+            fi
         fi
-
         launch_docker_compose "${compose_opts[@]}" "$action" "${action_opts[@]}" "${action_posargs[@]}" "${remainder_args[@]}"
         ;;
     logs)