Release jlmerclusterperm 1.0.4

[yjunechoe]

Prepare for release:

• git pull
• Check current CRAN check results
• Polish NEWS
• urlchecker::url_check()
• devtools::build_readme()
• devtools::check(remote = TRUE, manual = TRUE)
• devtools::check_win_devel()
• revdepcheck::revdep_check(num_workers = 4)
• Update cran-comments.md
• pkgdown::build_site()
• git push

Submit to CRAN:

• usethis::use_version('patch')
• devtools::submit_cran()
• Approve email

Wait for CRAN...

• Accepted 🎉
• usethis::use_github_release()
• usethis::use_dev_version(push = TRUE)

[yjunechoe]

Failing rlibro checks because Julia is trying to create Manifest.toml upon Pkg.instantiate on a read-only system. Waiting for CRAN response on best approach to this (just skip tests?)