Consistently suppress startup messages

model-basics.Rmd

@@ -45,7 +45,7 @@ The goal of a model is not to uncover truth, but to discover a simple approximat
 
 In this chapter we'll use the modelr package which wraps around base R's modelling functions to make them work naturally in a pipe.
 
-```{r setup, message = FALSE, cache = FALSE}
+```{r setup, message = FALSE}
 library(tidyverse)
 
 library(modelr)

pipes.Rmd

@@ -8,7 +8,7 @@ Pipes are a powerful tool for clearly expressing a sequence of multiple operatio
 
 The pipe, `%>%`, comes from the __magrittr__ package by Stefan Milton Bache. Packages in the tidyverse load `%>%` for you automatically, so you don't usually load magrittr explicitly.  Here, however, we're focussing on piping, and we aren't loading any other packages, so we will load it explicitly.
 
-```{r setup}
+```{r setup, message = FALSE}
 library(magrittr)
 ```
 

tibble.Rmd

@@ -10,7 +10,7 @@ If this chapter leaves you wanting to learn more about tibbles, you might enjoy
 
 In this chapter we'll explore the __tibble__ package, part of the core tidyverse.
 
-```{r setup}
+```{r setup, message = FALSE}
 library(tidyverse)
 ```