Checklist for CRAN release

[gvegayon]

Before sending to CRAN:

• The package CI (GitHub Actions) runs without errors, warnings, or notes in all OS.
• If there are any notes on R CMD check, those are OK (like 'size of the installed package').
• The version is 0.1-0 in the DESCRIPTION file.
• The description and title in the DESCRIPTION file are sound.
• No extraneous file is included in R CMD build (e.g., .DS_store or README.Rmd).
• The date in the DESCRIPTION file is updated.
• Double check grammar in the models' description (markdown files under inst).
• Make sure we have included the contributions from the Department of Health and Human Services.

cc @derekmeyer37