Log Message:
py-txtorcon: update to 23.0.0.

v23.0.0
-------

February 15, 2023

 * Drop python2 support
 * Fix a bug with `CONTROLLER_WAIT` events

v22.0.0
-------

March 16, 2022

 * Use GitHub Action for CI (instead of Travis)
 * fix coveralls uploading of coverage

v21.1.0
-------

August 16, 2021

 * Fix some incorrect unit-test skipping logic (thanks `@exarkun
 <https://github.com/exarkun>`, `#354
 <https://github.com/meejah/txtorcon/issues/354>`_ and `#352
 <https://github.com/meejah/txtorcon/issues/352>`_)
 * Fix broken tests revealed by previous fixes (thanks `@exarkun
 <https://github.com/exarkun>`, `#356
 <https://github.com/meejah/txtorcon/issues/356>`_

v21.0.0
-------

August 7, 2021

 * Use GitHub Actions instead of Travis for CI
 * fix Python 3.x+ bug with `TorInfo` and `__class__` access (`#350
 <https://github.com/meejah/txtorcon/issues/350>`_)