move ch04

src/ch04_machinery/fsm.rs

@@ -1,3 +1,5 @@
+#![allow(unused)]
+
 #[derive(Debug, PartialEq, Copy, Clone)]
 enum State {
     Idle,

src/ch04_machinery/mod.rs

@@ -0,0 +1,2 @@
+mod fsm;
+mod turing;

src/ch04_machinery/turing.rs

@@ -1,3 +1,4 @@
+#![allow(unused)]
 type State = usize;
 
 #[derive(Debug, PartialEq, Clone)]

src/lib.rs

@@ -1,2 +1 @@
-pub mod fsm;
+mod ch04_machinery;
-pub mod turing;