Updated it. It has been pretty much abandoned yes (as I have stopped playing Minecraft lately) but JIRA won't allow me to assign you as owner
I feel it is somewhat irrelevant as I thought of this and also tested the Entity specific data on a creeper. Not sure how I can run an NBT editor on a single horse when I don't know where it's stored
The Horse example hasn't been relevant at all since the change to the Minecraft name system which decoupled names from accounts. I have updated the bug report so it only has the creeper example