dscore 2.1.0

Country-specific references and BSID-III instrument support

• Country-specific GSED references now available
  • Seven new site references: GSED-BGD, GSED-BRA, GSED-CHN, GSED-CIV,
    GSED-NLD, GSED-PAK and GSED-TZA
  • References are centered and standardized for approximately normal
    DAZ distributions
  • Usage: dscore::dscore(..., population = "GSED-BGD", ...)
• Adds full support for BSID-III (by3) in key gsed2510
  • 242 new items added to itembank
  • Updated vignettes reflect BSID-III integration
• Updated GSED HF (gh1) instrument
  • Now uses 48-item version (previously 55 items)
  • Three-month form items removed
  • New key files: hf_48_2406.txt and hf_48_2510.txt
• What else is new?
  • New ddomain() function for domain-level scoring with
    builtin_domains data
  • Renamed reference "who_descriptive" to "descriptive"
  • Smarter get_reference(): returns most recent key when specified
    key is not found
  • New example dataset triple for demo purposes
• Bug fixes
  • Preserves age in dscore() when all responses are NA
  • Corrected documentation: default key is gsed2510 (not gsed2406)
  • Updated mu-model for "who_descriptive" populations
• Breaking changes
  • Reference "who_descriptive" renamed to "descriptive" — update
    your code if you relied on the old name