Add these things to _quarto

[RaymondBalise]

set YAML to include:
knitr:
opts_chunk: ########## set global options ############
collapse: true # keep code from blocks together (if shown)
echo: false # don't show code
message: true # show messages
warning: true # show warnings
error: true # show error messages
comment: "" # don't show ## with printed output
dpi: 100 # image resolution (typically 300 for publication)
fig-width: 6.5 # figure width
fig-height: 4.0 # figure height
R.options:
digits: 3 # round to three digits