Configuration option for number of concurrent requests

tests/test_gui_convenience.py

@@ -505,7 +505,7 @@ class GuiConvenienceTests(unittest.TestCase):
         self.app._target_selected_copy()
 
         command = self.app._make_command()
-        self.assertEqual(Path(command[-1]), copies / "Copie02.pdf")
+        self.assertEqual(Path(command[5]), copies / "Copie02.pdf")
 
         def button_texts(widget):
             return [