Ok, no problem. It's not important at this time, was just curious.
Your editor works except for items (which you already know), but I have an in game workaround for that.
An undo button would be nice, but that's why I keep backups. This editor works so well, I'm sure just about any modder could use it.
In the future (probably after ADDM v1.2) I will write some modding notes, zip it up and post the download so others can have modding documentation to speed things up for others. When they are up, you can host them on your GitHub if you want a copy to host.
At this point I don't think I have anymore suggestions for your editor. It's not like it needs very much, it's already highly functional. Though you may want to get some friends to make some translations (french, Spanish, etc) in the future, but probably not needed yet until people take a more active interest in it first.