The use_pydatetime configuration option has been removed. Now, always
default to Python's builtin datetime. mxDatetime support continues to be
available as an alternative to Python's builtin datetime.

Big and complex _pq_fetch_tuples simplified by moving per-column
calculation to a separate function.

The wheel package format supports including the license file. This is
done using the [metadata] section in the setup.cfg file. For additional
information on this feature, see:

https://wheel.readthedocs.io/en/stable/index.html#including-the-license-in-the-generated-wheel-file

Setuptools removes them from the sdist, see #453

It was necessary before PG 7.4, in versions which have long been unsupported.

Introduced in 2.0 beta 8, 2006 A.D. Went absolutely untouched in 8 years
of refactoring, when Python 2.5 and PostgreSQL 8.1 roamed the earth.

I would say it has stood the test of the time.

Building without extensions has been long broken and nobody really cares
about a pure-DBAPI implementation (which could be created using a wrapper
instead).

They were not used anymore after pg_config had become mandatory to build the
module.  Thanks to Steven Winfield for the report (ticket #109).