Add `type_caster<PyObject>`#30021

Merged

rwgk merged 9 commits intogoogle:mainfrom

rwgk:type_caster_PyObject_pywrapcc

Apr 5, 2023

Commits on Apr 1, 2023

Commits on Apr 2, 2023

to-Pyton-cast: `return_value_policy::_clif_automatic` => take ownership
rwgk
committed

Commits on Apr 3, 2023

`handle.inc_ref()` in `T cast(const handle &handle)` specialization for `PyObject *`
rwgk
committed
Guard against accidental leaking by requiring `return_value_policy::reference` or `automatic_reference`
rwgk
committed