* Add a missing 'raise' statement
* document sending out an email upon release
* Drop the use of include_package_data=True in setup.py.
* Fix compatibility with pypdf 3.x, and correctly restore test
data.
* Rework PDF annotations processing into a separate method.
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/diffoscope?expand=0&rev=86
