Merge branch 'master' into docking

# Conflicts:
#	backends/imgui_impl_sdl2.cpp
#	backends/imgui_impl_sdl2.h
#	backends/imgui_impl_sdl3.cpp
#	backends/imgui_impl_sdl3.h
#	imgui.cpp

examples/example_sdl2_opengl2/main.cpp

@@ -24,6 +24,11 @@ int main(int, char**)
         return -1;
     }
 
+    // From 2.0.18: Enable native IME.
+#ifdef SDL_HINT_IME_SHOW_UI
+    SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
+#endif
+
     // Setup window
     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
     SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);