Changes in version 0.1.0 (2026-09-21)                  

  - Initial CRAN submission.
  - Added indicators for trade openness and bilateral export/import
    intensity.
  - Added HHI-, normalized HHI-, Shannon-, and effective-number measures
    of trade diversification.
  - Added structural diversification, export similarity, trade
    complementarity, Balassa RCA, and Grubel-Lloyd intra-industry trade
    indices.