Version 0.4.1

• Non-finite inputs (NA, Inf, and NaN) no longer produce an error.
  • Inf is handled like a normal number. nom_card(Inf) produces "infinity" and nom_ord(Inf) produces "infinitieth".
  • NA and NaN propagate through functions. All functions return NA for NA and "NaN" for NaN.
• The logic in ordinal() has been simplified and now runs slightly faster.