update trpl

steveklabnik · steveklabnik · commit 112feb99aa64 · 2018-01-30T09:14:52.000-05:00
Includes rust-lang/book#1088 and rust-lang/book@62210e3
diff --git a/src/doc/book b/src/doc/book
@@ -1 +1 @@
-Subproject commit 194eb8d5f1753fb5f4501011cebdc1b585712474
+Subproject commit a645960fe48946153936dd5628df4a90bd837981
