_output.yml

bookdown::pdf_book: 
    includes:
      in_header: preamble.tex
    latex_engine: xelatex

bookdown::gitbook:
  sharing:
      github: yes
  css: css/style.css
  split_by: section
  includes:
      in_header: hypothesis.html
  config:
    toc:
      number_sections: null
      collapse: section
      before: |
        <li><a href="./">ODATE</a></li>
      after: |
        <li><a href="https://creativecommons.org/licenses/by/4.0/" target="blank">CC-BY 4.0</a></li>
        <li><a href="https://github.com/rstudio/bookdown" target="blank">Made with bookdown</a></li>
        <li><a href="https://www.ecampusontario.ca/" target="blank">Funded by EcampusOntario</a></li>