From 4866b29c5c931e8885e0fbb1792e1bf7850a8bc0 Mon Sep 17 00:00:00 2001
From: Cheerego <35982308+shanyi15@users.noreply.github.com>
Date: Sat, 2 Mar 2019 17:04:23 +0800
Subject: [PATCH] update_book_0302 (#667)

---
 external/book | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/external/book b/external/book
index 2e55fd4630de3..2a1d135ccd102 160000
--- a/external/book
+++ b/external/book
@@ -1 +1 @@
-Subproject commit 2e55fd4630de30ecf86e5c59f89285e5786762ba
+Subproject commit 2a1d135ccd10247954ba4cc5f870580a76b4530f