⬆️ version bump to v4.5

- Update obioptions.Version from "Release 4.4.29" to "/v/ Release v5"
- Update version.txt from 4.29 → .30
(automated by Makefile)

autodoc/docmd/pkg/obistats/table.md

@@ -0,0 +1,31 @@
+# `obistats` Package: Benchmark Statistics and Comparison
+
+The `obistats` package provides semantic tools to analyze, compare, and display benchmark results—typically from Go’s `testing.B` benchmarks. It enables structured reporting of performance changes across configurations (e.g., before/after code modifications).
+
+### Core Concepts
+- **`Collection`**: Aggregates benchmark metrics across groups, benchmarks, and configurations.
+- **`Table` & `Row`**: Represent formatted tabular output for human-readable comparison (e.g., in CLI tools like `benchstat`).
+- **Metrics per row**: Include mean, variance, sample size (`n`), and statistical test results.
+
+### Key Functionalities
+- **Statistical summarization**: Computes means, variances, and other stats via `computeStats()`.
+- **Delta comparison** (2-config mode):
+  - Performs statistical tests (`UTest` by default) to assess significance.
+  - Calculates percent change: `((new/old) − 1) × 100%`.
+  - Marks improvements (`+1`) or regressions (`−1`), respecting metric semantics (e.g., lower time/op is better; higher MB/s is better).
+- **Handling edge cases**:
+  - Skips rows with missing data (e.g., one config absent).
+  - Notes issues: zero variance, insufficient samples, or identical values.
+- **Geometric mean aggregation**:
+  - Adds a `[Geo mean]` row summarizing overall performance across benchmarks.
+  - Excludes zero-mean entries to avoid distortion (e.g., allocations of `0`).
+- **Metric normalization**:
+  - Maps raw units (`ns/op`, `B/op`) to semantic names (e.g., `"time/op"`, `"alloc/op"`).
+  - Supports prefixed units (`foo-ns/op` → `foo-time/op`).
+
+### Output Customization
+- Supports sorting via user-defined order (`c.Order`).
+- Configurable significance level `α` (default: 0.05) for p-value filtering.
+- Optional geomean inclusion (`c.AddGeoMean`).
+
+Designed for integration into benchmark analysis pipelines (e.g., CLI tools), `obistats` focuses on **semantic clarity**, **statistical rigor**, and **actionable insights**.