Log Message:
(devel/R-devtools)  Updated 2.2.1 to 2.3.1

# devtools 2.3.1

* `Run* `run_examples()` arguments `run` and `test` are deprecated in
  favor of the (hopefully) more clear `run_dontrun` and `run_donttest`
  (pkgload/#107).

* Previously deprecated functions `dr_devtools()` and `dr_github()` have been \ 
removed.

* Documentation has been synced with remotes 2.2.0

# devtools 2.3.0

* `build()` now errors with a more informative error message when passed an
  invalid `pkg`. (#2177)

* New `build_rmd()` can build any `.Rmd` file in a clean session.

* `dev_sitrep()` now works correctly when R is out of date (#2204)

# devtools 2.2.2

* `install_dev_deps()` now passes formal args onto `remotes::install_deps()`
(@t-gibson, #2166)

* `spell_check()` now checks if `spelling` is installed and prompts users to
  install it if not (@mikemahoney218, #2172)

* `submit_cran()` now returns a more informative error when the CRAN submission
  portal is down (#1958)

* `check()` gains a `vignettes` argument, to more easily disable checks for
  vignettes (#2165).

* `check_win_*()` function now resets the email to the original email after
  execution (@muschellij2, #2152).

* `check()` now sets `NOT_CRAN=true` by default, as was originally intended (#2135).

* `install_deps()` now supports `options("devtools.ellipsis_action")` \ 
as well
  (#2169)

* `test()` now takes `stop_on_failure` as a formal argument (FALSE by default)
  instead of in `...`. Its value is still passed to `testthat::test_dir` as
    before (@infotroph, #2129).

* `test()` and `test_coverage_file()` gain a `export_all` argument, which
  controls if all functions in a package are automatically exported (#1201).

* `dev_sitrep()` now works if run outside a package directory (#2127).

* `release()` now works if the package root is not in the working directory.