Update sphinx from 1.7.5 to 1.8.4

pyup-bot · pyup-bot · commit 0f060b88d914 · 2019-02-11T15:15:45.000+02:00
diff --git a/requirements-doc.txt b/requirements-doc.txt
@@ -1,2 +1,2 @@
-sphinx==1.7.5
+sphinx==1.8.4
 sphinxcontrib-asyncio==0.2.0
