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A post for the documentation (Home > Blog) on how 3.13.0 became faster: eight themes with the pull requests behind them, the ideas taken from other libraries, what did not work, how the fast paths are tested, and the compile-time cost. Every number comes from a run on 2026-10-27 (3.12.0 against develop plus the open non-draft PRs, Apple M1 Max) or from the linked PR. - docs/mkdocs/docs/home/blog/how_3_13_0_got_faster.md: the post. - docs/mkdocs/scripts/figures/perf_blog.py: draws its 12 figures (overview, eight timeline panels, the SWAR test, the cliffs, json_view throughput) as inline SVGs in the nj-charts style; data/perf_timeline.csv holds the timeline. - tests/benchmarks/history: history.cpp and history.py time one fixed program against the header of every commit that changed it, interleaved, and write one CSV row per commit with its PR. The timeline of the post comes from it. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
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