Only smart pointers should implement Deref

[matthiasbeyer]

Hi.

I found in your API that BlobsProtocol: Deref<Store> and (even more strange) BlobsProtocol: Deref<Blobs>.

The Rust API guidelines state that only smart pointers should be implementing Deref.

I think it would be a good idea to remove these Deref implementations (and possibly others) for API clearity.

What do you think?

[rklaehn]

I will have to think about it. I saw Deref used for convenience many, many times, so I wasn't aware that it is supposed to be only used for smart pointers.