Ensure that encoded output ends with a newline

src/encode.rs

@@ -62,6 +62,11 @@ impl<R: Read, W: Write> Encoder<R, W> {
                 break;
             }
             if n_bytes == 0 {
+                if let Some(wrap) = self.wrap {
+                    if total % wrap != 0 {
+                        writeln!(self.writer)?;
+                    }
+                }
                 break;
             }
             for (idx, n) in ibuf.iter().enumerate() {