~dricottone/pkgbuilds

ref: 7715f1b0caadc38e752847319bea985005df6d6b pkgbuilds/r-diffobj 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.