turn off caching in vignettes

Author: eddelbuettel

ChangeLog

@@ -2,6 +2,9 @@
 
 	* DESCRIPTION (Version, Date): Roll minor version
 
+	* vignettes/Rcpp-FAQ.Rmd: Turn off knitr cache
+	* vignettes/Rcpp-introduction.Rmd: Idem
+
 2019-10-19  Stephen Wade  <stephematician@gmail.com>
 
 	* inst/include/Rcpp/XPtr.h: XPtr constructor split up, a single

vignettes/Rcpp-FAQ.Rmd

@@ -88,7 +88,7 @@ vignette: >
 \tableofcontents
 
 ```{r setup, include=FALSE}
-knitr::opts_chunk$set(cache=TRUE)
+knitr::opts_chunk$set(cache=FALSE)
 library(Rcpp)
 library(inline)
 options("width"=50, digits=5)

vignettes/Rcpp-introduction.Rmd

@@ -86,7 +86,7 @@ vignette: >
 ---
 
 ```{r setup, include=FALSE}
-knitr::opts_chunk$set(cache=TRUE)
+knitr::opts_chunk$set(cache=FALSE)
 library(Rcpp)
 options("width"=50, digits=5)
 ```