Allow running notbooks in binder

Project.toml

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+[deps]
+CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
+DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
+Flux = "587475ba-b771-5e3f-ad9e-33799f191a9c"
+Images = "916415d5-f1e6-5110-898d-aaa5f9f070e0"
+Interact = "c601a237-2ae4-5e1e-952c-7a85b0c7eef1"
+PlotlyBase = "a03496cd-edff-5a9b-9e67-9cda94a718b5"
+PlotlyJS = "f0f68f2c-4968-5e81-91da-67840de0976a"
+Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
+Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
+TextParse = "e0df1984-e451-5cb5-8b61-797a481e67e3"
+
+[compat]
+julia = "1.6"

postBuild

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+jupyter contrib nbextension install --user
+jupyter nbextension enable --py widgetsnbextension
+# jupyter labextension install @jupyter-widgets/jupyterlab-manager@0.38 --minimize=False
+
+# https://binnisb.github.io/blog/datascience/2020/04/02/Plotly-in-lab.html
+# Avoid "JavaScript heap out of memory" errors during extension installation
+# (OS X/Linux)
+export NODE_OPTIONS=--max-old-space-size=4096
+
+# Jupyter widgets extension
+jupyter labextension install @jupyter-widgets/jupyterlab-manager --no-build
+
+# jupyterlab renderer support
+jupyter labextension install jupyterlab-plotly --no-build
+
+# FigureWidget support
+jupyter labextension install plotlywidget --no-build
+
+# Build extensions (must be done to activate extensions since --no-build is used above)
+jupyter lab build
+
+# Unset NODE_OPTIONS environment variable
+# (OS X/Linux)
+unset NODE_OPTIONS

requirements.txt

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+webio_jupyter_extension
+ipywidgets
+jupyter_contrib_nbextensions