pybind11

feat: parallel compiler (#2521)

Unify Python 2 & 3 py::module constructor, and make contructor with pre-allocated PyModuleDef private (#2534)

fix: conda-forge patch (#2540)

Allow raw unions without base classes in is_accessible_base_of (#2320)

Moving tp_class access, and consistent fully-qualified naming for PyPy, to detail::get_tp_name (#2520)