- update to 2.9.1:
* If possible, attach Python exception with py::raise_from to TypeError when
casting from C++ to Python. This will give additional info if Python
exceptions occur in the caster.
* Add a mapping of C++11 nested exceptions to their Python exception
equivalent using py::raise_from. This attaches the nested exceptions in
Python using the __cause__ field.
* Propagate Python exception traceback using raise_from if a pybind11
function runs out of overloads.
* py::multiple_inheritance is now only needed when C++ bases are hidden from
pybind11.
* Allow py::args to be followed by other arguments; the remaining arguments
are implicitly keyword-only, as if a py::kw_only{} annotation had been
used.
* Fix a rare warning about extra copy in an Eigen constructor.
* Fix caching of the C++ overrides.
* Add missing std::forward calls to some cpp_function overloads.
* Support PyPy 7.3.7 and the PyPy3.8 beta. Test python-3.11 on PRs with the python dev label.
* Replace usage of deprecated Eigen::MappedSparseMatrix with Eigen::Map> for Eigen 3.3+.
* Tweaks to support Microsoft Visual Studio 2022.