ulyngs/oxforddown: Streamlined version of oxforddown

MAJOR CHANGES: The introduction chapter is now a chapter similar to all your other chapters - it should no longer be named _introduction.Rmd and is no longer a child of index.Rmd. In HTML output, the content in front-and-back-matter/_welcome-ebook.Rmd will be shown on the landing page, followed by the abstract and acknowledgements. NEW FUNCTIONALITY: you can now output to the great-looking BS4 book style, with make bs4book for PDF output you can now control the location of page numbers and running headers, as well as spacing around code blocks, directly from the YAML header in index.Rmd position images and plots where they are located in the text, with the chunk option fig.pos = 'H' read a new chapter with tips and tricks you need to handle tables in PDF output MINOR CHANGES & BUG FIXES: the Makefile now automatically generates a docs/.nojekyll file when outputting to HTML format - this file is needed to deploy on GitHub pages you can now use more than one bibliography file Enjoy