Changed Altair version to 4
@@ -22,8 +22,8 @@ and then proceed to use the Altair version 1 API.
.. note::
- We strongly recommend all users transition to Vega-Lite 2.x and Vega 3.x.
- These versions support many new features, are more stable, and Altair 2.0
+ We strongly recommend all users transition to Vega-Lite 4.x and Vega 5.x.
+ These versions support many new features, are more stable, and Altair 4
works best with them.
Because Altair has focused primarily on the vega-lite API, the vega wrappers are
