Changes in 0.4 (2016-11-17):
  * Pull request #7 from Thomas G. for adding a keyutils.clear()
  * Release process improvements: added tox support
  * Pull request #10 from Ernest to remove non-ascii characters from README.rst

Changes in 0.3 (2015-12-11):
  * Merged in pull requests from Thomas G. for making the package compatible
  with python 3

Changes in 0.2 (2015-04-06):
  * Ported to Cython
  * Added new functions join_session_keyring, link, unlink, search, revoke

Changes in 0.1 (2009-07-24):
  * Initial release
