lol add session 13 stuff a year later

.gitignore

@@ -17,3 +17,5 @@ slides-archive/
 **/*_cache/*
 
 README.html
+
+/.luarc.json

class/13-class.qmd

@@ -23,3 +23,17 @@ slide_details <- tibble::tribble(
 ## Written response question
 
 How and for what reasons do countries (authoritarian or democratic) rely on NGOs? Can an international NGO working in an authoritarian country be complicit in any of that country's human rights abuses? (Answer in ≈150 words.)
+
+
+## Slides
+
+The slides for today's class are available online as an HTML file. Use the buttons below to open the slides either as an interactive website or as a static PDF (for printing or storing for later). You can also click in the slides below and navigate through them with your left and right arrow keys.
+
+```{r show-slide-tabs, echo=FALSE, results="asis"}
+slide_buttons("/slides/13-slides")
+slide_tabs(slide_details, "/slides/13-slides.html")
+```
+
+:::{.callout-tip}
+**Fun fact**: If you type <kbd>?</kbd> (or <kbd>shift</kbd> + <kbd>/</kbd>) while going through the slides, you can see a list of special slide-specific commands.
+:::