Merge pull request #476 from astrofrog/fix-ci-3

Fix continuous integration

Author: astrofrog

setup.cfg

@@ -20,6 +20,7 @@ install_requires =
     ipympl>=0.3.0
     ipyvolume>=0.5.0
     ipyvolume>=0.6.0a10; python_version >= '3.8'
+    ipython_genutils>=0.2
     ipywidgets>=7.4.0
     ipyvue>=1.2.0,<2
     ipyvuetify>=1.2.0,<2