Updated CHANGELOG.md regarding VMA_VULKAN_HEADERS_ALREADY_INCLUDED

Author: reg-pl

CHANGELOG.md

@@ -7,8 +7,9 @@
 - Improvements for external memory export & import (#503):
   - Added functions `vmaCreateDedicatedBuffer`, `vmaCreateDedicatedImage`, `vmaAllocateDedicatedMemory` offering extra parameter `void* pMemoryAllocateNext`.
   - Added function `vmaGetMemoryWin32Handle2` offering extra parameter `VkExternalMemoryHandleTypeFlagBits handleType`.
-- Added member `VmaVulkanFunctions::vkGetPhysicalDeviceProperties2KHR` and macro `VMA_GET_PHYSICAL_DEVICE_PROPERTIES2` to fix validation layer warnings about the usage of legacy commands on Vulkan ≥ 1.1 (#530, #531).
+- Added member `VmaVulkanFunctions::vkGetPhysicalDeviceProperties2KHR` and macro `VMA_GET_PHYSICAL_DEVICE_PROPERTIES2` to fix validation layer warnings about the usage of legacy commands on Vulkan >= 1.1 (#530, #531).
 - Added `VMA_VERSION` macro with library version number (#507).
+- Added support for `VMA_VULKAN_HEADERS_ALREADY_INCLUDED`. When defined, VMA does not include `<vulkan/vulkan.h>`.
 - Improvements in the algorithm choosing memory type when `VMA_MEMORY_USAGE_AUTO*` is used (#520).
 - Fixed compatibility with C++20 modules on Clang 21 and GCC15 (#513, #514).
 - Fixed a bug in buffer-image granularity handling (#517).