Feed.put with data yields weird results

[Frando]

I was looking into coupling hypercore-protocol-rs to hypercore today a bit.

However, I was unable to put any data into a cloned hypercore. It seems the put method either has a bug or I did not understand how to use it correctly. I'll open a PR with a failing test.

[Frando]

See #108.

[bltavares]

@Frando Could you confirm that #110 and #111 fixed your issue, so we can close it?

[Frando]

Yes, this is fixed!