#1947 Changelog Update

CHANGELOG.md

@@ -16,6 +16,7 @@
   - Supported extensions and layers are now retrieved from the `VulkanLibrary` object. The old `layers_list` and `InstanceExtensions` methods are removed.
   - The deprecated methods of `DeviceExtensions` are removed.
   - Vulkano-win: `required_extensions` now requires a reference to `VulkanLibrary`.
+  - `VulkanLibrary::get_instance_proc_addr` is now `unsafe`, and returns `ash::vk::PFN_vkVoidFunction`.
 - **Breaking** Changes to Vulkano-util:
   - Required instance extensions for surface creation aren't added until `VulkanoContext` is created.
   - The `instance`, `device`, `graphics_queue` and `compute_queue` methods of `VulkanoContext` now return a reference instead of an owned `Arc`.