I have not looked at the source code but from what the 'author' states in the comment sections he combined two of your addons into one of "his".
I suppose he should have uploaded it as a patch to yours instead.
It is a bit tricky with addons I feel. On one hand I would think we all would like for there to be a great number of awesome addons, with the sharing of ideas, coding tips and tricks etc. with each other. But on the other hand I assume we would want to avoid a situation where there are 5 identical clones for every addon, simply because people want credit.
I saw in the comment section someone wanted me to include auto-repair in one addon. After seeing this thread I think it would be better if I direct the user to one of the other durability/repair addons (even though they all, for some reason, want to use a UI for this.) instead of adding it as an option in mine (Although I would implement it differently than those others -- because I can not do XML
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