Merge branch 'master' into docking + update for IMGUI_DEBUG_LOG calls.

# Conflicts:
#	backends/imgui_impl_dx12.cpp
#	imgui.cpp
#	imgui_internal.h

backends/imgui_impl_win32.cpp

@@ -695,6 +695,7 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
             io.AddInputCharacterUTF16((unsigned short)wParam);
         return 0;
     case WM_SETCURSOR:
+        // This is required to restore cursor when transitioning from e.g resize borders to client area.
         if (LOWORD(lParam) == HTCLIENT && ImGui_ImplWin32_UpdateMouseCursor())
             return 1;
         return 0;