~dricottone/pkgbuilds

ref: d36be7d61530d542d0df98085f7028cd4662b8eb pkgbuilds/r-xml2-git d---------
Initial commit

A long journey to packaging r-tidyverse. The current highest-level
packages that are successfully built are dtplyr, waldo, callr, and xml2.
A handful of others (brio, digest, praise, units, zeallot) are currently
freestanding but will become dependencies soon.