New dataset region_isos_demo

[jdhoffa]

• This dataset should be an exact duplicate of region_isos but with the column source equal to "demo_2020".

• and filter region for c("global", "europe",...) plus a handful of sensible regions).

[maurolepore]

Add region_isos_demo

• Starts not from a .csv but from the exported dataset region_isos.
• Add "data-raw/data_dictionary/region_isos_demo.csv"
• In "data-raw/region_isos_demo.R", add something like:

  region_isos_demo <- r2dii.data::region_isos %>%
       # code
  use_data(region_isos_demo, overwrite = TRUE)
  

• usethis::use_r("region_isos_demo"). Document region_isos_demo
• usethis::use_test("region_isos_demo"). Add regression tests of region_isos_demo
• source("data-raw/data_dictionary.R"); devtools::load_all()
• usethis::use_test("data_dictionary"). Test data_dictionary includes region_isos_demo

[maurolepore]

Closed by #62