Jupyterlab-slideshow

- [36] adds support for Jupyter Notebook 7 and JupyterLab 4

[36]: https://github.com/deathbeds/jupyterlab-deck/issues/36

- [19] adds a basic Markdown presenter, with slides delimited by `---`
- [22] adds a stack of previously-viewed documents when navigating between documents
- [27] adds a drag-and-drop _slide layout_ overlay and design tools to support
customization
- [29] adds support for using `<header>` anchors while presenting

[19]: https://github.com/deathbeds/jupyterlab-deck/issues/19
[22]: https://github.com/deathbeds/jupyterlab-deck/issues/22
[27]: https://github.com/deathbeds/jupyterlab-deck/issues/27
[29]: https://github.com/deathbeds/jupyterlab-deck/issues/29

- [17] adds foreground and background layers with customized per-cell styling

[17]: https://github.com/deathbeds/jupyterlab-deck/issues/15

Enhancements

- improve keyboard navigation with (<kbd>shift</kbd>)<kbd>space</kbd>
- the active cell is scrolled into view when exiting presentation mode

Bug Fixes

- fix some packaging metadata and documentation issues
- fix handling of `null` cells

_initial release_