Release parcr 0.5.0

[douwe]

First release:

• [x] usethis::use_cran_comments()
• [x] Update (aspirational) install instructions in README
• [x] Proofread Title: and Description:
• [x] Check that all exported functions have @return and @examples
• [x] Check that Authors@R: includes a copyright holder (role 'cph')
• [x] Check licensing of included files
• [x] #7
  • [x] Roxygen examples in un-exported function my_fun should use pkg:::my_fun
  • [x] Wrap \dontrun{} in try() when showing error generation
  • [x] All functions, including those marked @keywords internal must have a @return description. Those that do not return anything must have e.g. \value{None}
  • [x] All functions must have @examples section, even those that are marked @keywords internal.
  • [x] Check DESCRIPTION title with tools::toTitleCase().
• [x] #8

Prepare for release:

• [x] git pull
• [x] urlchecker::url_check()
• [x] devtools::check(remote = TRUE, manual = TRUE)
• [x] devtools::check_win_devel()
• [x] git push

Submit to CRAN:

• [x] usethis::use_version('minor')
• [x] devtools::submit_cran()
• [x] Approve email

Wait for CRAN...

• [x] Accepted :tada:
• [x] usethis::use_github_release()
• [x] usethis::use_dev_version(push = TRUE)