Jupyter Notebook Integration

[Flemingjp]

A potentially effective workflow would be to create Caroline presentations using a Python Notebook. Each slide could be self-contained in a notebook cell and rendered as the output, as quick feedback for creating slides.

Currently p.showSlide(indx: int) can output the HTML for a slide. Some integration to render the lastest slide as the cell output would be needed. A Python Notebook should be able to support and render any HTML generated by Caroline.