This support for building and running Mojo code in a Jupyter notebook cell has been added into the mojo package, so in Colab you can now
import mojo.notebook
and compile and run Mojo code in a cell using
%%mojo
# Mojo code here
This even extends to building Mojo packages from a notebook cell, using the syntax
%%mojo package -o custom_ops.mojopkg
# Mojo code here
The newly simplified Mojo notebook example now uses this import.
