Merge branch 'master' into docking

# Conflicts:
#	backends/imgui_impl_opengl2.cpp
#	backends/imgui_impl_opengl3.cpp
#	backends/imgui_impl_sdl2.cpp
#	backends/imgui_impl_sdl3.cpp
#	docs/CHANGELOG.txt
#	imgui_widgets.cpp

backends/imgui_impl_sdl2.cpp

@@ -76,6 +76,12 @@
 #include "imgui.h"
 #include "imgui_impl_sdl2.h"
 
+// Clang warnings with -Weverything
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wimplicit-int-float-conversion"  // warning: implicit conversion from 'xxx' to 'float' may lose precision
+#endif
+
 // SDL
 // (the multi-viewports feature requires SDL features supported from SDL 2.0.4+. SDL 2.0.5+ is highly recommended)
 #include <SDL.h>
@@ -1010,3 +1016,7 @@ static void ImGui_ImplSDL2_ShutdownPlatformInterface()
 {
     ImGui::DestroyPlatformWindows();
 }
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif