Change extension setup() return value to a dictionary of metadata.

This makes it possible to introduce more metadata values later.

1 files changed, 1 insertions, 1 deletions

diff --git a/sphinx/ext/doctest.py b/sphinx/ext/doctest.py
index 2e2a98b1a..7a90ee16b 100644
--- a/sphinx/ext/doctest.py
+++ b/sphinx/ext/doctest.py
@@ -443,4 +443,4 @@ def setup(app):
     app.add_config_value('doctest_test_doctest_blocks', 'default', False)
     app.add_config_value('doctest_global_setup', '', False)
     app.add_config_value('doctest_global_cleanup', '', False)
-    return sphinx.__version__
+    return {'version': sphinx.__version__}