v0.3.4: Merge pull request #52 from epi-sam/dev

2024-09-30 v.0.3.4

• added:
  • utils_io.R from ihme.covid package
    • make_new_output_dir - create a version-incremented run-date folder based on a 'YYYY_MM_DD.VV' run-date folder structure
      • supported by get_latest_output_date_index and get_new_output_dir
    • get_latest_output_dir - get the latest output directory based on a 'YYYY_MM_DD.VV' run-date folder structure
    • added tests, updated deprecated methods
• documented:
  • some previously undocumented helper functions for various methods (not exported)