Added qden() for quantile density estimation using
QOR-based and density-based methods.
Added qor() for computing quantile optimality ratios
using the generalized lambda distribution, lognormal, normal,
exponential, and user-supplied quantile functions.
Added qrcov() for covariance matrix estimation for
ratios of linear combinations of quantile estimators.
Added rcv.test() for one- and two-sample inference
for robust coefficients of variation based on the MAD or IQR.
Extended qcov() to use the new quantile density
estimation framework, including flexible distributional choices for
QOR-based estimation.
Extended qineq() to support additional
quantile-based inequality measures and user-specified measures.
Updated q.test() to improve quantile-based inference
and argument handling.
Improved input validation, documentation, and error and warning messages throughout the package.
Expanded the automated test suite to cover the new and updated functions.
NEWS.md file to track changes to the
package.