Add tox to development requirements

astrojuanlu · astrojuanlu · commit 2f3e2a40d87f · 2019-06-10T09:20:53.000+02:00
Fix poliastro#687.
diff --git a/setup.cfg b/setup.cfg
@@ -77,7 +77,7 @@ dev =
     pytest-mpl
     sphinx
     sphinx_rtd_theme>=0.4.3
-    nbsphinx
+    tox
 
 [tool:pytest]
 norecursedirs =
