You're definitely right about the backwards compatibility point. I'll think about whether this simpler concept might work for "paid" kinds of tags. Posets won't be too bad if there's UI for it. It's just "what versions should this version trump?" And straight version number comparison could be optionally implicit.
As for an ETA on 1.5 final, I'm not in a huge rush since it's pretty stable as is. If nothing else, I'll have a little more time to work on it this summer when I'm not doing coursework all the time.
You're definitely right about the backwards compatibility point. I'll think about whether this simpler concept might work for "paid" kinds of tags. Posets won't be too bad if there's UI for it. It's just "what versions should this version trump?" And straight version number comparison could be optionally implicit.
As for an ETA on 1.5 final, I'm not in a huge rush since it's pretty stable as is. If nothing else, I'll have a little more time to work on it this summer when I'm not doing coursework all the time.