- Update to version 1.5.51
* New release with modified copyrights
* Fix typos and syntax
* Fix insert_before() and insert_after(), update Copyrights
* Expose a proxy function to call ipaddress.collapse_addresses()
* More logging work... prepare for debugging overhaul.
* Refine error logging in setup.py
* Fix get_metadata() returned value in setup.py
* Rework version.json to metadata.json