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#2316 changelog

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CHANGELOG.md
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@ -98,6 +98,15 @@ Changes to `Format`:
- `ShaderScalarType` is renamed to `NumericType`.
Changes to memory allocation:
- The memory (sub)allocation API has been completely reworked.
- `Buffer` and `SubbufferAllocator` now take an `Arc<dyn MemoryAllocator>` on construction.
- `Suballocator` and `MemoryAllocator` now have explicit `deallocate` methods in order to fix all the flexibility issues.
- `Suballocator` is completely generic now in regards to the type of suballocation.
- `SuballocationCreateInfo` was removed.
- `MemoryAllocatePreference` and `AllocationType` are no longer marked `#[non_exhaustive]`.
- `MemoryAlloc` was replaced by `ResourceMemory`, `MemoryAlloc` now only represents specifically allocations made by `MemoryAllocator`.
- `PoolAllocator` was removed.
- `GenericMemoryAllocatorCreateInfo::allocation_type` was removed.
- `AllocationCreateInfo::usage` and `SubbufferAllocatorCreateInfo::memory_usage` were replaced by a `memory_type_filter` field, to allow for a more flexible selection of the memory type. Additionally, `SubbufferAllocatorCreateInfo::memory_type_filter` defaults to `MemoryTypeFilter::PREFER_DEVICE` for consistency with `AllocationCreateInfo`, unlike the previous default of `MemoryUsage::Upload`.
- `SubbufferAllocatorCreateInfo::buffer_usage` is now empty by default for consistency with `BufferCreateInfo`.
- `MemoryAlloc::new` no longer returns a `Result`, and doesn't map the `DeviceMemory` automatically anymore.