fluidsynth 2.4.3

• It was discovered, that exclusive class note terminations were too slow (#1467, thanks to @mrbumpy409)
• Fix a regression introduced in 2.4.0 that allowed the amplitude of a voice playing in delay phase to rise infinitely (#1451)
• MSGS drum-style note-cut has been converted to an opt-in setting synth.note-cut (#1466)
• Support for SDL2 has been disabled by default* (#1472)
• Fix a regression introduced in 2.4.1 that could have caused infinite audio gain output for some MIDI files under certain configurations (#1464)
• Silence a warning issued by Systemd v254+ (#1474, thanks to @andrew-sayers)

*It was found that SDL2 hijacks fluidsynth's main() function which causes build problems on Windows, see (#1472). A PR for migrating to SDL3 is highly welcome! If you still want to compile with SDL2 support, you need to explicitly enable it using CMake flag -Denable-sdl2=1.