Warn when user is running a version of the notebook pre https://github.com/jupyter/notebook/pull/1279 This is much better than the catastrophic find_static_assets function does not exist failure which causes the notebook server to not launch.
Warn when user is running a version of the notebook pre https://github.com/jupyter/notebook/pull/1279
This is much better than the catastrophic find_static_assets function
does not exist failure which causes the notebook server to not launch.

SylvainCorlay/ipywidgets,cornhundred/ipywidgets,cornhundred/ipywidgets,ipython/ipywidgets,jupyter-widgets/ipywidgets,jupyter-widgets/ipywidgets,cornhundred/ipywidgets,cornhundred/ipywidgets,jupyter-widgets/ipywidgets,SylvainCorlay/ipywidgets,SylvainCorlay/ipywidgets,SylvainCorlay/ipywidgets,ipython/ipywidgets,cornhundred/ipywidgets,ipython/ipywidgets,ipython/ipywidgets,ipython/ipywidgets,jupyter-widgets/ipywidgets