Contains 1.2.0 and 1.2.1 changes

https://netaddr.readthedocs.io/en/latest/changes.html#release-1-2-0
https://netaddr.readthedocs.io/en/latest/changes.html#release-1-2-1

Changelog: https://netaddr.readthedocs.io/en/latest/changes.html#release-1-1-0
Commits: https://github.com/netaddr/netaddr/compare/1.0.0...1.1.0

Changelog: https://netaddr.readthedocs.io/en/latest/changes.html#release-1-0-0
Commits: https://github.com/netaddr/netaddr/compare/0.10.1...1.0.0

Changelog: https://netaddr.readthedocs.io/en/latest/changes.html#release-0-10-1
Commits: https://github.com/netaddr/netaddr/compare/0.10.0...0.10.1

Changelog: https://netaddr.readthedocs.io/en/latest/changes.html#release-0-10-0
Commits: https://github.com/netaddr/netaddr/compare/0.9.0...0.10.0

Date: 2023-09-18

Added:

* Add hash capabilities to OUI (225, amitmi704)

Fixed:

* **Backwards incompatible:** Handle RFC 6164 IPv6 addresses (don't reserve first IP
address in point-to-point subnets) ($267, Damien Claisse)
* **Technically backwards incompatible:** Fix for is_loopback behaviour – consider
``IPNetwork('::1/128')`` to be loopback (222, 223, niels)
* Include tutorials in source distributions (215, Louis Sautier)
* Fix a documentation typo (242, Wouter)
* Fix print syntax in the documentation to be Python 3 compatible (221, François Magimel)
* Fix the Sphinx syntax in the documentation (220, François Magimel)

Other:

* Update the databases (266, Jakub Stasiak)
* Deprecate Python 3.6 (263, Jakub Stasiak)
* Eliminate unnecessary evals (228, KOLANICH)

Full changelog: https://github.com/netaddr/netaddr/compare/0.8.0...0.9.0