------------------
* Dropped official support for Python 3.7 and lower, and added official support
for Python 3.8 and higher.
* Added support for the latest versions of all dependencies, and upgraded
minimum supported versions of dependencies as follows:
* ``docopt``: ``0.4.0``
* ``requests``: ``1.0.0``
* ``tldextract``: ``1.2.0``
* ``with-deps`` extra dependencies:
* ``joblib``: ``1.2.0``
* ``lxml``: ``4.4.1``
* ``lxml-html-clean``: ``0.1.0``
* ``scikit-learn``: ``0.18.0`` → ``0.24.0``
* ``scipy``: ``1.5.1``
* ``sklearn-crfsuite``: ``0.3.1`` → ``0.5.1``
* https://github.com/scrapinghub/formasaurus is the new code repository,
replacing https://github.com/TeamHG-Memex/Formasaurus.
* Updated the CI configuration and development tooling.