rmarkdown-advanced example read/compile error using foreign (v0.8-68). solution using readstata13 or haven

[drenn2]

Replace line 100-111

```{r, echo=TRUE, message=FALSE}
need <- c("foreign", "sandwich", "ggplot2", "stargazer", "readstata13") # list packages you need
have <- need %in% rownames(installed.packages()) # see which are already
if(any(!have)) install.packages(need[!have]) # installs the missing ones 
invisible(lapply(need, library, character.only=T)) # then loads them all
```

Load the data: 

```{r, echo = T, message = F, warning=F}
washb <- readstata13::read.dta13("WASHBpublic_mock.dta") # Fix error using the foreign package
```