roll forward dependency on sphinx version

ViktorHaag · ViktorHaag · commit a2a96d270e4e · 2019-06-03T08:11:55.000-04:00
diff --git a/requirements.txt b/requirements.txt
@@ -1 +1 @@
-sphinx>=1.3, <2.1
+sphinx>=1.3, <2.2
