update release notes

Author: leofang

cuda_core/docs/source/release/0.2.0-notes.rst

@@ -9,20 +9,22 @@ Highlights
 ----------
 
 - Add :class:`~ProgramOptions` to facilitate the passing of runtime compile options to :obj:`~Program`.
-- Add :class:`~DeviceProperties` to provide pythonic access to device properties.
-- Add kernel attributes to :class:`~Kernel`
+- Add pythonic access to :class:`Device` and :class:`~_module.Kernel` attributes.
 
 Breaking Changes
 ----------------
 
-- Change ``__cuda_stream__`` from attribute to method
-- The :meth:`~Program.compile` method no longer accepts the `options` argument. Instead, you can optionally pass an instance of :class:`~ProgramOptions` to the constructor of :obj:`~Program`.
-- :meth:`~Device.properties` now provides an instance of :class:`~DeviceProperties` instead of a dictionary.
+- Change ``__cuda_stream__`` from attribute to method.
+- The :meth:`Program.compile` method no longer accepts the ``options`` argument. Instead, you can optionally pass an instance of :class:`ProgramOptions` to the constructor of :class:`Program`.
+- :meth:`Device.properties` now provides attribute getters instead of a dictionary interface.
+- The ``.handle`` attribute of various ``cuda.core`` objects now returns the underlying Python object instead of a (type-erased) Python integer.
 
 New features
 ------------
 
 - Expose :class:`ObjectCode` as a public API, which allows loading cubins from memory or disk. For loading other kinds of code types, please continue using :class:`Program`.
+- A C++ helper function ``get_cuda_native_handle()`` is provided in the new ``include/utility.cuh`` header to retrive the underlying CUDA C objects (ex: ``CUstream``) from a Python object returned by the ``.handle`` attribute (ex: :attr:`Stream.handle`).
+- For objects such as :class:`Program` and :class:`Linker` that could dispatch to different backends, a new ``.backend`` attribute is provided to query this information.
 
 Limitations
 -----------