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Matt's Q1 2024 Update

https://cppalliance.org/matt/2024/04/22/MattsQ1Update.html

During Q1 2024, work was performed on several Boost libraries: Charconv completed its review and was released in Boost 1.85; the Decimal library progressed toward a beta with major performance gains; the Multi library preparation for review was undertaken; and new optimization algorithms were added to the Math sub‑library in Boost 1.85. Community feedback and bug fixes were incorporated throughout.

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