From ff399a098e6ee6112c4b3685d3041a83b50aa58a Mon Sep 17 00:00:00 2001
From: steveklabnik <steve@steveklabnik.com>
Date: Tue, 16 May 2017 16:00:13 -0400
Subject: [PATCH] Update the various books to latest

This includes a draft of chapter 20 of the book!
---
 src/doc/book      | 2 +-
 src/doc/reference | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/doc/book b/src/doc/book
index ad7de198561b3..97422981c53a0 160000
--- a/src/doc/book
+++ b/src/doc/book
@@ -1 +1 @@
-Subproject commit ad7de198561b3a12217ea2da76d796d9c7fc0ed3
+Subproject commit 97422981c53a00f7c3d6584d363443117f179fff
diff --git a/src/doc/reference b/src/doc/reference
index 6b0de90d87dda..f7a108dfa9e90 160000
--- a/src/doc/reference
+++ b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 6b0de90d87dda15e323ef24cdf7ed873ac5cf4d3
+Subproject commit f7a108dfa9e90b07821700c55d01f08a9adf005c