Version 1.0.6 - 2016-06-26 Major enhancements.
The functionality of adding Book Detail View labels has been refined, as has the ability to randomly copy a ZColumn to another Calibre Custom Column.
Most ToolTips have been changed to reflect the paradigm that only ZMI may add Zotero books to Calibre, and that the "Add Books" button in Calibre should never be used to add Zotero books unless you want to manually input their metadata into Calibre one-by-one.
DaltonST