docs: update changelog for 2.10.0 (#4066)

docs/changelog.rst

@@ -9,14 +9,13 @@ Starting with version 1.8.0, pybind11 releases use a `semantic versioning
 Changes will be added here periodically from the "Suggested changelog entry"
 Changes will be added here periodically from the "Suggested changelog entry"
 block in pull request descriptions.
 block in pull request descriptions.
 
 
-IN DEVELOPMENT
---------------
+Version 2.10.0 (Jul 15, 2022)
+-----------------------------
 
 
 Removed support for Python 2.7, Python 3.5, and MSVC 2015. Support for MSVC
 Removed support for Python 2.7, Python 3.5, and MSVC 2015. Support for MSVC
 2017 is limited due to availability of CI runners; we highly recommend MSVC
 2017 is limited due to availability of CI runners; we highly recommend MSVC
 2019 or 2022 be used. Initial support added for Python 3.11.
 2019 or 2022 be used. Initial support added for Python 3.11.
 
 
-
 New features:
 New features:
 
 
 * ``py::anyset`` & ``py::frozenset`` were added, with copying (cast) to
 * ``py::anyset`` & ``py::frozenset`` were added, with copying (cast) to
@@ -70,6 +69,9 @@ Changes:
   requiring ``NDEBUG``, allowing use with release builds if desired.
   requiring ``NDEBUG``, allowing use with release builds if desired.
   `#3913 <https://github.com/pybind/pybind11/pull/3913>`_
   `#3913 <https://github.com/pybind/pybind11/pull/3913>`_
 
 
+* Implicit conversion of the literal ``0`` to ``pybind11::handle`` is now disabled.
+  `#4008 <https://github.com/pybind/pybind11/pull/4008>`_
+
 
 
 Bug fixes:
 Bug fixes:
 
 
@@ -98,6 +100,14 @@ Bug fixes:
 * Fix cast from pytype rvalue to another pytype.
 * Fix cast from pytype rvalue to another pytype.
   `#3949 <https://github.com/pybind/pybind11/pull/3949>`_
   `#3949 <https://github.com/pybind/pybind11/pull/3949>`_
 
 
+* Ensure proper behavior when garbage collecting classes with dynamic attributes in Python >=3.9.
+  `#4051 <https://github.com/pybind/pybind11/pull/4051>`_
+
+* A couple long-standing ``PYBIND11_NAMESPACE``
+  ``__attribute__((visibility("hidden")))`` inconsistencies are now fixed
+  (affects only unusual environments).
+  `#4043 <https://github.com/pybind/pybind11/pull/4043>`_
+
 * ``pybind11::detail::get_internals()`` is now resilient to in-flight Python
 * ``pybind11::detail::get_internals()`` is now resilient to in-flight Python
   exceptions.
   exceptions.
   `#3981 <https://github.com/pybind/pybind11/pull/3981>`_
   `#3981 <https://github.com/pybind/pybind11/pull/3981>`_
@@ -147,6 +157,9 @@ Performance and style:
 * Optimize c++ to python function casting by using the rvalue caster.
 * Optimize c++ to python function casting by using the rvalue caster.
   `#3966 <https://github.com/pybind/pybind11/pull/3966>`_
   `#3966 <https://github.com/pybind/pybind11/pull/3966>`_
 
 
+* Optimize Eigen sparse matrix casting by removing unnecessary temporary.
+  `#4064 <https://github.com/pybind/pybind11/pull/4064>`_
+
 * Avoid potential implicit copy/assignment constructors causing double free in
 * Avoid potential implicit copy/assignment constructors causing double free in
   ``strdup_gaurd``.
   ``strdup_gaurd``.
   `#3905 <https://github.com/pybind/pybind11/pull/3905>`_
   `#3905 <https://github.com/pybind/pybind11/pull/3905>`_
@@ -182,6 +195,9 @@ Build system improvements:
 
 
 Backend and tidying up:
 Backend and tidying up:
 
 
+* New theme for the documentation.
+  `#3109 <https://github.com/pybind/pybind11/pull/3109>`_
+
 * Remove idioms in code comments.  Use more inclusive language.
 * Remove idioms in code comments.  Use more inclusive language.
   `#3809 <https://github.com/pybind/pybind11/pull/3809>`_
   `#3809 <https://github.com/pybind/pybind11/pull/3809>`_