fix bug where long lines were truncated in plain mode without wrap=never not being set

src/wrapping.rs

@@ -1,11 +1,11 @@
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum WrappingMode {
     Character,
-    NoWrapping,
+    NoWrapping(bool), // explicitly opted in or not
 }
 
 impl Default for WrappingMode {
     fn default() -> Self {
-        WrappingMode::NoWrapping
+        WrappingMode::NoWrapping(false)
     }
 }