Add a newline to serialization results

Otherwise editing the output in an editor
is likely to make the data not match anymore,
since most editors will add a final newline.

Update all tests

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/layouts/effigy.layout b/tests/layouts/effigy.layout
index a2275d45..cc8c4282 100644
--- a/tests/layouts/effigy.layout
+++ b/tests/layouts/effigy.layout
@@ -185,4 +185,4 @@
       }
     ]
   }
-}
\ No newline at end of file
+}