• Rust extension declares gil_used = false so it runs under free-threaded (no-GIL) Python [Meir Kriheli]
• Added concurrent stress test for get_display under free-threaded builds [Meir Kriheli]
• CI: optional cp313t/cp314t wheel builds when setup-python provides those interpreters; free-threaded test job prefers 3.14t with 3.13t fallback [Meir Kriheli]
• CI: Intel macOS wheels now built on macOS 15 (replacing macOS 13) [Meir Kriheli]
• Use uv for nox virtualenvs; add uv.lock and document uv-based dev setup in README and CONTRIBUTING [Meir Kriheli]
• Set requires-python = ">=3.9" explicitly in pyproject.toml [Meir Kriheli]