• Update to fmt lib version 9.1.0 #2346, #2485, #2512, #2517 . Thanks @sylveon, @YunchengLiu, @tt4g, @tycho and @vitaut
• Fix template instantiation warning #2336 . Thanks @aengusjiang
• Event handlers improvements #2342, #2375 . Thanks @espkk and @kslattery
• Allow modifying the used Android buffer ID #2358. Thanks @tiolan
• Fix clone in async test #2364. Thanks @stkw0
• Custom formatting optimization #2365. Thanks @conr2d
• Fix C++14 builds for gcc 4.x (#2333) #2372 . Thanks @kslattery
• Add minor version to CMake's SOVERSION #2376
• Allow compilation with FMT_ENFORCE_COMPILE_STRING #2381. Thanks @john4744
• Fix pkg-config generation #2383. Thanks @alexshpilkin
• Remove unused code from null_mutex #2385. Thanks @panzhongxian
• Fix redundant std::move #2396. Thanks @polesapart
• Remove the empty file if in first period in hourly logger #2386. Thanks @panzhongxian
• Add reset_overrun_counter() function to the async logging #2399 Thanks @bergen4
• Set C++20 in CMake when SPDLOG_USE_STD_FORMAT option is turned on #2402. Thanks @cookcocck
• Fix mingw test #2415. Thanks @neheb
• Support for any std::chrono::duration type in flush_every(..) #2439. Thanks @LucasChollet
• Fix implicit casting of level_enum #2443. Thanks @ibmibmibm
• Comment fix #2445. Thanks @Hish15
• Fix gcc 4.x build #2449. Thanks @Simon-Janos
• Add openSUSE installation instructions #2468. Thanks @LorenDB
• Fixed missing include file in stopwatch.h #2434. Thanks @fabianbuettner
• Support for omitting source info by defining SPDLOG_NO_SOURCE_LOC #2476. Thanks @nigels-com
• Added SPDLOG_BUILD_PIC build option to CMake #2475. Thanks @nigels-com
• Fix include windows.h #2495. Thanks @panicgh
• Workaround gcc 12 warnings #2498, #2499 . Thanks @offa
• Migrate to Github Actions CI #2500. Thanks @offa
• Replace iterator difference with std::distance #2509 Thanks @kin4stat
• Export targets file to build directory at configure time #2514, #2515. Thanks @puneetmatharu
• MongoDB sink improvements #2519. Thanks @sandorzm
• Fix shadow warning in dist_sink #2431. Thanks @MohammadKanan for reporting.
• Fixed msvc warning C4800 in win_eventlog_sink
• Check IsDebuggerPresent() in msvc_sink before doing actual work #2408. To use old behavior pass false to the msvc_sink constructor. Thanks @DominikGrabiec and @sylveon

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