Version 4.2.2 - 2017-11-07
* Bug fixes (see mercurial logs for details)

Version 4.2.1 - 2017-07-01
* Bug fixes (see mercurial logs for details)

Version 4.2.0 - 2016-11-28
* Bug fixes (see mercurial logs for details)
* Allow request without product
* Group requests of same product and unit into one purchase line

Version 4.0.0 - 2016-05-02
* Initial release
