Changes in version 1.3.4 (2026-09-17) Bug fixes - Fixed a compilation failure in src/Hierarchical.cpp caused by an ambiguous reference to span under newer C++20 toolchains, where std::span (pulled in transitively via /) collided with the unqualified arma::span from Armadillo. All uses are now explicitly qualified as arma::span. This was the cause of the package's archival from CRAN. Changes in version 1.3.3 (2025-09-13) Minor improvements and bug fixes - Added GitHub repository URL - Added explicit selection of the current version of RcppArmadillo - Fixed a small error in the calculation of E(T) for array testing with master pools