Use PyObject_GC_New instead of PyObject_New when appropriate.
Use PyObject_GC_New instead of PyObject_New when appropriate.

cawka/pybindgen,caramucho/pybindgen,cawka/pybindgen,caramucho/pybindgen,caramucho/pybindgen,caramucho/pybindgen,cawka/pybindgen,cawka/pybindgen