mation on available tags.

## Reproducing this README

TODO

<!--

To reduce the book's dependencies, scripts to be run infrequently to generate input for the book are run on creation of this README.

The additional packages required for this can be installed as follows:


``` r
source("code/extra-pkgs.R")
```

With these additional dependencies installed, you should be able to run the following scripts, which create content for the book, that we've removed from the main book build to reduce package depende