Release 0.43.0 (2026-07-11)

Breaking changes

• Make the rand / rand_distr sampling stack optional behind the default-on rand feature (#88, #104)
• Existing default-feature users are unchanged.
• default-features = false now provides a deterministic core without RNG dependencies; sampling APIs require the rand feature.
• This is a breaking change for users who already disabled default features and relied on sampling APIs.

New features

• Add the Dirichlet(α) probability distribution (#95)
• Add O3-openblas-system for linking a system-installed OpenBLAS through pkg-config (#98, #107)

Documentation

• Clarify BLAS/LAPACK backend selection, OpenBLAS source versus system builds, TLS prerequisites, and HDF5 constraints (#98)
• Remove the stale Peroxide_BLAS setup link from the main README; the archived repository is retained for historical reference
• Replace the hand-maintained source-layout table with module-level docs.rs pointers and improve module descriptions (#99, #108)

CI / Lint

• Add cargo-hack coverage for individual features and pairwise pure-Rust feature combinations (#98)
• Add dedicated CI coverage for system/source OpenBLAS, no-rand wasm32, plotting, formatting, and clippy