This is a list of major changes in SDL's version history.

---------------------------------------------------------------------------
3.2.0:
---------------------------------------------------------------------------

General:
* SDL headers should now be included as `#include <SDL3/SDL.h>`
* Many functions and symbols have changed since SDL 2.0, see the [migration guide](docs/README-migration.md) for details
* The preprocessor symbol __MACOSX__ has been renamed __MACOS__
* The preprocessor symbol __IPHONEOS__ has been renamed __IOS__
* SDL_stdinc.h no longer includes stdio.h, stdlib.h, etc., it only provides the SDL C runtime functionality
* Added SDL_CreateSurface() and SDL_CreateSurfaceFrom() which replace SDL_CreateRGBSurface*(), and can also be used to create YUV surfaces
* Added SDL_HasJoysticks(), SDL_GetJoysticks(), SDL_GetJoystickInstanceName(), SDL_GetJoystickInstancePath(), SDL_GetJoystickInstancePlayerIndex(), SDL_GetJoystickInstanceGUID(), SDL_GetJoystickInstanceVendor(), SDL_GetJoystickInstanceProduct(), SDL_GetJoystickInstanceProductVersion(), and SDL_GetJoystickInstanceType() to directly query the list of available joysticks
* Added SDL_HasGamepads(), SDL_GetGamepads(), SDL_GetGamepadInstanceName(), SDL_GetGamepadInstancePath(), SDL_GetGamepadInstancePlayerIndex(), SDL_GetGamepadInstanceGUID(), SDL_GetGamepadInstanceVendor(), SDL_GetGamepadInstanceProduct(), SDL_GetGamepadInstanceProductVersion(), and SDL_GetGamepadInstanceType() to directly query the list of available gamepads
* Added SDL_HasSensors(), SDL_GetSensors(), SDL_GetSensorInstanceName(), SDL_GetSensorInstanceType(), and SDL_GetSensorInstanceNonPortableType() to directly query the list of available sensors
* SDL_GetTicks() now returns a 64-bit value and the tick values should be directly compared instead of using the SDL_TICKS_PASSED macro
* Added SDL_GetTicksNS() to return the number of nanoseconds since the SDL library initialized
* Added SDL_DelayNS() to specify a delay in nanoseconds, to the highest precision the system will support
* The timestamp member of the SDL_Event structure is now in nanoseconds, filled in with the time the event was generated, or the time it was queued if that's not available
* Added SDL_modf() and SDL_modff() to separate the whole and fractional portions of a floating point number