Update CHANGELOG

Author: kngwyu

CHANGELOG.md

@@ -11,15 +11,21 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 * The blanket implementations for `FromPyObject` for `&T` and `&mut T` are no longer specializable. Implement `PyTryFrom` for your type to control the behavior of `FromPyObject::extract()` for your types.
 * The implementation for `IntoPy<U> for T` where `U: FromPy<T>` is no longer specializable. Control the behavior of this via the implementation of `FromPy`.
+* `#[new]` does not take `PyRawObject` and can reutrn `Self`  [#683](https://github.com/PyO3/pyo3/pull/683)
 
 ### Added
 
 * Implemented `IntoIterator` for `PySet` and `PyFrozenSet`. [#716](https://github.com/PyO3/pyo3/pull/716)
+* `PyClass`, `PyClassShell`, `PyObjectLayout`, `PyClassInitializer` [#683](https://github.com/PyO3/pyo3/pull/683)
 
 ### Fixed
 
 * Clear error indicator when the exception is handled on the Rust side. [#719](https://github.com/PyO3/pyo3/pull/719)
 
+### Removed
+
+* `PyRef`, `PyRefMut`, `PyRawObject` [#683](https://github.com/PyO3/pyo3/pull/683)
+
 ## [0.8.5]
 
 * Support for `#[name = "foo"]` attribute for `#[pyfunction]` and in `#[pymethods]`. [#692](https://github.com/PyO3/pyo3/pull/692)