Add runtime sphinx depends (Closes: #896372, #896312)

debian/changelog

+python-sphinxcontrib.plantuml (0.5-4) unstable; urgency=medium
+
+  * Add runtime sphinx depends (Closes: #896372, #896312).
+
+ -- Thomas Goirand <zigo@debian.org>  Sat, 21 Apr 2018 14:56:54 +0000
+
 python-sphinxcontrib.plantuml (0.5-3) unstable; urgency=medium
 
   [ Ondřej Nový ]

debian/control

@@ -21,6 +21,7 @@ Package: python-sphinxcontrib.plantuml
 Architecture: all
 Depends:
  plantuml,
+ python-sphinx,
  ${misc:Depends},
  ${python:Depends},
 Description: PlantUML extension for Sphinx - Python 2.x
@@ -36,6 +37,7 @@ Package: python3-sphinxcontrib.plantuml
 Architecture: all
 Depends:
  plantuml,
+ python3-sphinx,
  ${misc:Depends},
  ${python3:Depends},
 Description: PlantUML extension for Sphinx - Python 3.x