Merge branch 'master' into docking

# Conflicts:
#	examples/example_sdl_opengl2/main.cpp
#	examples/example_sdl_opengl3/main.cpp
#	examples/example_sdl_vulkan/main.cpp
#	examples/imgui_impl_sdl.cpp
#	examples/imgui_impl_sdl.h
#	imgui.cpp

examples/imgui_impl_glfw.cpp

@@ -385,7 +385,7 @@ void ImGui_ImplGlfw_NewFrame()
     ImGui_ImplGlfw_UpdateMousePosAndButtons();
     ImGui_ImplGlfw_UpdateMouseCursor();
 
-    // Gamepad navigation mapping
+    // Update game controllers (if enabled and available)
     ImGui_ImplGlfw_UpdateGamepads();
 }