Add PDF build back in (does it cache?)

_output.yml

@@ -5,22 +5,22 @@
 # the tinytex R package, and tinytex::install_tinytex()
 # Inconsolata font needed from https://fonts.google.com/specimen/Inconsolata
 
-# bookdown::pdf_book:
-#   includes:
-#     in_header: latex/preamble.tex
-#     before_body: latex/before_body.tex
-#     after_body: latex/after_body.tex
-#   keep_tex: true
-#   dev: "cairo_pdf"
-#   latex_engine: xelatex
-#   citation_package: natbib
-#   template: null
-#   pandoc_args: --top-level-division=chapter
-#   toc_depth: 3
-#   toc_unnumbered: false
-#   toc_appendix: true
-#   quote_footer: ["\\VA{", "}{}"]
-#   highlight_bw: true
+bookdown::pdf_book:
+  includes:
+    in_header: latex/preamble.tex
+    before_body: latex/before_body.tex
+    after_body: latex/after_body.tex
+  keep_tex: true
+  dev: "cairo_pdf"
+  latex_engine: xelatex
+  citation_package: natbib
+  template: null
+  pandoc_args: --top-level-division=chapter
+  toc_depth: 3
+  toc_unnumbered: false
+  toc_appendix: true
+  quote_footer: ["\\VA{", "}{}"]
+  highlight_bw: true
 # bookdown::gitbook:
 #   df_print: default
 #   css: style.css