Changes in version 0.4.0 (2026-03-16)                  

  - Improved input validation across all functions: each check now
    produces a distinct, informative error message that names the
    offending argument.
  - Added anyNA() guards to all functions accepting probability vectors
    or matrices, so NA/NaN inputs are caught early.
  - Added is.matrix() checks to joint_entropy(), conditional_entropy(),
    and conditional_renyi_extropy().
  - kl_divergence() and cross_entropy() now emit a warning() (rather
    than silently replacing) when a zero entry in q is paired with a
    positive entry in p.
  - Expanded @examples sections for all exported functions.
  - Updated DESCRIPTION: added URL and BugReports fields; removed
    LazyData (no data files shipped).
  - Comprehensive testthat test suite covering correctness, limit cases,
    and all input-validation error/warning paths.

                        Changes in version 0.2.0                        

                        Changes in version 0.1.0                        

  - Initial CRAN submission.