package:bench_press v0.3.0

• Breaking Change: Streamlined Blackhole API to a single universal consume(Object? value) method. Removed redundant specialized methods (consumeInt, consumeDouble, consumeBool, consumeString, consumeObject).
• Hardened Blackhole compiler barrier against optimizing compiler Dead Code Elimination:
  • Adopted 3-bit cyclic Gray-code ring buffer indexing ((index & 7) ^ ((index & 7) >> 1)) to disrupt compiler loop unrolling and vectorization without consecutive slot collisions.
  • Coupled slot position with element hashing in Blackhole.drain() via Object.hash(_sink[i], i) to guarantee position-dependent reduction.
  • Corrected documentation regarding retention guarantees (retains the last 8 writes across the cyclic Gray-code buffer).
  • Fixed 5.2x latency cliff on Web/JavaScript previously caused by eager double.hashCode computation.
• Added top-level ### Suite Summary roll-up table with geometric mean, minimum, and maximum speedup across comparison groups to MarkdownReporter.renderSuite and MarkdownReporter.renderSuiteSummaryTable when suites contain 2 or more distinct groups (Issue #22).
• Added compilation artifact caching to TargetCompiler.compile and --cache / --no-cache CLI flags to bench_press run, avoiding redundant AOT/Wasm/JS compilation for unchanged benchmark files and dependencies (Issue #21).
• Added explicit CLI options --d8-path and --node-path to bench_press run and bench_press validate, supporting custom binary overrides, D8_PATH and NODE_BINARY/NODE_EXECUTABLE environment variables, and SDK auto-probing for bundled D8 under bin/resources/dart2wasm/d8 (Issue #19).
• Fixed silent crashes on Node.js for JS and Wasm targets by replacing stdout.writeln with print, generating self-invoking .run.mjs and .node.cjs wrappers with unhandled rejection listeners, and forwarding CLI arguments via dartMainRunner (Issue #29, #30).
• Added parameterized matrix group builder BenchmarkGroup.matrix<T> (and convenience Benchmark.matrix<T>) and BenchmarkMatrix<T> to benchmark competing implementations across parameterized inputs or datasets without repetitive boilerplate (Issue #23).
• Added mainBenchmarkMatrix CLI entrypoint and updated mainBenchmarkSuite to execute BenchmarkMatrix instances seamlessly.
• Added robust dispersion metrics to BenchmarkMetrics: Median Absolute Deviation (madNs), normal-consistent robust CV (robustCv = (1.4826 * madNs) / medianNs), and Interquartile Range (iqrNs).
• Added isRobustStable to BenchmarkMetrics and updated isStable to incorporate robust dispersion, preventing transient bimodal GC sweeps from falsely failing steady-state stability for allocation-heavy workloads (Issue #20).
• Added adaptive trial scaling via --max-trials CLI option and maxTrials in BenchmarkConfig / DefaultsConfig, allowing BenchmarkRunner to dynamically collect additional measurement trials when initial variance exceeds threshold.
• Enhanced AdaptiveWarmupDetector to distinguish systemic monotonic drift from transient bimodal outliers via computeRobustSem and hasSystemicDrift.
• Added non-breaking warmupComplete() lifecycle hook to Benchmark and AsyncBenchmark.