I made a new alpha4 version. I fixed some various small issues with the previous version. Updated the tooltip display slightly to be more accurate.
A new feature has been added: upon selecting a base item, the item template/icon will automatically be resolved if it exists (if no such template exists for this item, it will keep the template as-is).
Icon button still does not work and I may remove it in a future release. The "icon" is actually the item template and it is much more important than just the icon. It controls the item type (consumable/equippable/etc), icon, 3d visuals, etc.

I also added the missing DLL to the zip.