Update sphinx from 1.6.3 to 1.6.4 (#72)

pyup-bot · tony · commit ae2b57062fd0 · 2017-09-26T20:23:34.000-05:00
diff --git a/requirements/doc.txt b/requirements/doc.txt
@@ -1,4 +1,4 @@
 docutils==0.14
 releases==1.3.1 # updated from 1.2.0
-sphinx==1.6.3
+sphinx==1.6.4
 alagitpull==0.0.13
