Release 0.9.1 version

* Fix outdated URLs
* Bump version number to 0.9.1

Release v0.9.0

Per README.md, this project was GPLv2+ up until 0.3.0.  Apparently we
forgot to change the license in the Fedora specfile those days.  Doing
now upstream to be in sync (and using the SPDX format directly).

Release 0.8.2

Release 0.8.1 (with bumped setup.py version)

Release 0.8.0

Version 0.7.0

Version 0.6.0

Version 0.5.0

Version 0.4.1

Version 0.4.0