[issue30579] Allow traceback objects to be instantiated/mutated/annotated

[Giampaolo Rodola']

Change by Giampaolo Rodola' <g.rodola at gmail.com>:


----------
nosy:  -giampaolo.rodola

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue30579>
_______________________________________