Add different interfaces for get mutable item?

[thomas-yuan]

PR #157 fixed the mutable put with salt, but thinking about the interface, we actually export the logic (target = hash (public_key+salt)) to the user when they try to get a mutable item from DHT.

should we add a different interface for mutable item get like get(public_key, salt, callback) to make the interface more clearly? By this way, I, as a user, needn't care about how to calculate the hash, won't make the same mistake as what #157 fixed.

[feross]

This issue appears stale since it has been open for a while with no activity. I'm going to close it for now. If this is still issue, please feel free to leave a comment or open a new issue.