Bump Sphinx to v3

wsanchez · wsanchez · commit 7d72c07d9e77 · 2020-06-07T16:15:46.000-07:00
diff --git a/tox.ini b/tox.ini
@@ -317,7 +317,7 @@ description = build documentation
 basepython = {[default]basepython}
 
 deps =
-    Sphinx==2.4.4
+    Sphinx==3.0.4
     sphinx-rtd-theme==0.4.3
 
 commands =
