Code Tree vignette

[shug0131]

code tree is a pain. can build from render button, but run analysis-template.rmd first to create output files

have two version of doc, one as html one as pdf, need to modify in parallel. No movement on rstduio package building optinos to make both pdf & html in devtools::build()

the build_vignettes() without the install=FALSE works in general but may still fail with the pdf format output (weird tex issues)

the devtools::build() works OK, and then installs ok

the core of the issue is the r knit_child(text=src) lines. Depends where the package is temporarily built and the environments, then it doesn't find the value of src.

Could consider dropping this vignette, as nobody actually uses the functionality.