Replace vincent with altair

docs/using/selecting.md

@@ -95,7 +95,8 @@ and versioning strategy.
 `jupyter/scipy-notebook` includes popular packages from the scientific Python ecosystem.
 
 - Everything in `jupyter/minimal-notebook` and its ancestor images
-- [beautifulsoup4](https://www.crummy.com/software/BeautifulSoup/),
+- [altair](https://altair-viz.github.io),
+  [beautifulsoup4](https://www.crummy.com/software/BeautifulSoup/),
   [bokeh](https://docs.bokeh.org/en/latest/),
   [bottleneck](https://bottleneck.readthedocs.io/en/latest/),
   [cloudpickle](https://github.com/cloudpipe/cloudpickle),
@@ -118,7 +119,6 @@ and versioning strategy.
   [sqlalchemy](https://www.sqlalchemy.org/),
   [statsmodel](https://www.statsmodels.org/stable/index.html),
   [sympy](https://www.sympy.org/en/index.html),
-  [vincent](https://vincent.readthedocs.io/en/latest/),
   [widgetsnbextension](https://ipywidgets.readthedocs.io/en/latest/user_install.html#installing-in-classic-jupyter-notebook),
   [xlrd](https://www.python-excel.org)
   packages

scipy-notebook/Dockerfile

@@ -16,6 +16,7 @@ USER $NB_UID
 
 # Install Python 3 packages
 RUN conda install --quiet --yes \
+    'altair=4.1.*' \
     'beautifulsoup4=4.9.*' \
     'bokeh=2.3.*' \
     'bottleneck=1.3.*' \
@@ -41,7 +42,6 @@ RUN conda install --quiet --yes \
     'sqlalchemy=1.4.*' \
     'statsmodels=0.12.*' \
     'sympy=1.8.*' \
-    'vincent=0.4.*' \
     'widgetsnbextension=3.5.*'\
     'xlrd=2.0.*' && \
     conda clean --all -f -y && \