Setup script to be called at beginning of rmarkdown files

Loads knitr, kableExtra, font awesome, sets an RNG seed, and sets several convenient knitr options:

• Aliases for h (fig.height) and w (fig.width)

• Turns on fig.align="center", message=FALSE, etc., almost always what one wants if writing a report (as opposed to an R instructional document)

• Sets smaller figure margins

knitr_setup(fa = TRUE)

Arguments

fa

Load font awesome? (default: TRUE)