Construction Wand (Fabric)

This is a backport of changes from newer versions of this mod to 1.20.1.

I decided to do this because the previous 1.20.1 download was by far the most popular file I have ever published on CF.

Important changes:

• Add true opt key keybind
• Skip unique items
• General code improvements

Note that owo-lib is still required for this version.

As usual, please report any issues to the linked issue tracker (GitHub)!