Add missing dependency

wch · wch · commit 8bdb855bb259 · 2022-05-27T18:20:24.000-05:00
diff --git a/setup.cfg b/setup.cfg
@@ -34,6 +34,7 @@ install_requires =
   ipywidgets>=7.6.5
   jupyter_core
   shiny>=0.2.0.9004
+  python-dateutil>=2.8.2
 tests_require =
     pytest>=3
 zip_safe = False
