* Render the book in PDF using `pandoc` and LaTeX.
* Fix installs.
* Go the apt-get route
* Another attempt
* Avoid installing twice.
* Re-order.
* Add more packages.
* Minimise deps. Fix link checker.
* Missing package.
* Missing package.
* Missing package.
* More packages.
* Missing package.
* Missing package.
* More packages...
* Remove.
* Fix link checker.
* Fix link checker.
* Fix path.
* Add subtitle.
* Avoid running over the right margin.
* Avoid running over the right margin.
* Formatting
