• Bump bundled {fmt} library to 12.1.0
• Fix the %z formatter (UTC offset):
  • Windows: Replaced implementation for better accuracy and speed (~2.5x) by @gabime in https://github.com/gabime/spdlog/pull/3508
  • FreeBSD: Fixed incorrect implementation (#3483) by @gabime in https://github.com/gabime/spdlog/pull/3491
  • Fixed issue where the offset was not displaying as +00:00 when the formatter was configured to show UTC time.
  • Removed unreliable fallback for Unix systems lacking tm_gmtoff. If compilation fails on such platforms, use SPDLOG_NO_TZ_OFFSET=ON (%z will display +??:?? instead of compilation error).
• Set CMAKE_BUILD_TYPE only in top-level project by @double-fault in https://github.com/gabime/spdlog/pull/3480
• Change access scope for ANSI target_file_ from private to protected by @fab4100 in https://github.com/gabime/spdlog/pull/3486
• Fix UWP detection by @jdumas in https://github.com/gabime/spdlog/pull/3489
• Fix include <fcntl.h> in tcp_client.h to avoid compilation failures by @maordadush in https://github.com/gabime/spdlog/pull/3497
• Tests: Fix unit tests to respect default level names by @ssam18 in https://github.com/gabime/spdlog/pull/3492
• Docs: Fix misleading comment in blocking_queue header by @zanewong233 in https://github.com/gabime/spdlog/pull/3504
• Fix sign-compare warning by @AleksandrSokolkin in https://github.com/gabime/spdlog/pull/3479
• Fix sign conversion warnings in qt_sinks.h by @ssam18 in https://github.com/gabime/spdlog/pull/3487

Full Changelog: https://github.com/gabime/spdlog/compare/v1.16.0...v1.17.0

Special thanks to @tt4g for assisting with community questions and issues.