nornir-testmatrix 0.2.1

Reusable, multi-aspect Rust test-matrix engine: wrap a repo's native cargo test/nextest plus build/clippy/fmt/audit/coverage/doctest aspects, parse the results into rows, and ship them to any TestSink. Pure std + serde — no iceberg, arrow, eframe. The portable core of nornir's `nornir test` matrix.