Compiles again after command subsystem

terrified to start testing

orchid-std/src/std/string/str_lib.rs

@@ -1,12 +1,9 @@
 use std::rc::Rc;
 
 use orchid_base::{fmt, is, mk_errv, sym};
-use orchid_extension::ForeignAtom;
-use orchid_extension::coroutine_exec::exec;
-use orchid_extension::expr::Expr;
-use orchid_extension::func_atom::get_arg;
 use orchid_extension::gen_expr::{call, new_atom};
 use orchid_extension::tree::{GenMember, comments, fun, prefix};
+use orchid_extension::{Expr, ForeignAtom, exec, get_arg};
 use unicode_segmentation::UnicodeSegmentation;
 
 use super::str_atom::StrAtom;