A new version of drat arrived earlier today on CRAN as another no-human-can-delay-this automatic upgrade directly from the CRAN prechecks. It is mostly a maintenance release ensuring
PACKAGES.rds is also updated, plus some minor other edits.
drat stands for drat R Archive Template, and helps with easy-to-create and easy-to-use repositories for R packages. Since its inception in early 2015 it has found reasonably widespread adoption among R users because repositories with marked releases is the better way to distribute code.
NEWS file summarises the release as follows:
Changes in drat version 0.1.3 (2017-09-16)
PACKAGES.rds, if present, is also inserted in repo
Updated ‘README.md’ removing stale example URLs (#63)
Use https to fetch Travis CI script from r-travis