diff --git a/nerval b/nerval
new file mode 160000
index 0000000000000000000000000000000000000000..525c1a9e6d5a33075669085148247e2604dd092f
--- /dev/null
+++ b/nerval
@@ -0,0 +1 @@
+Subproject commit 525c1a9e6d5a33075669085148247e2604dd092f