Changes in version 1.0.0 (2026-06-01)                  

  - Initial CRAN release.
  - mqq_regression() implements multivariate Quantile-on-Quantile
    regression (Sinha et al. 2023) extending the bivariate QQR of Sim
    and Zhou (2015) with exogenous moderators, optional x * Z
    interactions, paired-bootstrap standard errors and Koenker--Machado
    pseudo R-squared.
  - 3D surface, heatmap and contour visualisations (plot_mqq_3d,
    plot_mqq_heatmap, plot_mqq_contour, plot_mqq_interaction).
  - MATLAB Parula colour scale as the default, alongside Jet, Turbo,
    BlueRed and the Sinha red-yellow-black palette.
  - Helpers mqq_to_matrix(), mqq_export(), mqq_statistics().