Do note that the application is outdated and is not "complete" for the newest version of Terraria.
The tool isn't more then a simple program that creates a slightly more fleshed out skeletton, it can do a few things and those decently but if you want to make any major changes, this isn't for you.
It sadly will not be updated, the project on Github is archived, tho it is opensource and the process of adding the new items and everything should not be too much work, tho sadly I have to say that it is no longer maintained. Feel free to fork the project on Github tho.
