v0.3.8

What's Changed

• add spec file by @oliverkurth in #51
• add 'None' to name spaces by @oliverkurth in #52
• fix password setting in properties (was always false) by @oliverkurth in #53
• add support for multiple product sections by @oliverkurth in #50
• add 'units' option for disk images by @oliverkurth in #49

Full Changelog: v0.3.7...v0.3.8