Difference between del and put?

[makew0rld]

Hey, thanks for working on Hyperbee. I was just wondering if a developer could explain the difference between using del(key) and put(key, null). I would think they are the same, but the implementation seems different. Looking at #60 implies to me that it's not that the actual data is removed from the repository with del, but maybe things have changed since then. Any explanation on what del does would be appreciated.