Update dnet on PyPi to make this fork installable via pip

[simeonmiteff]

The current module on PyPi is the old python2-only version. It would be fantastic if this fork could get merged/blessed as the new upstream dnet. If that isn't possible perhaps putting it up as dnet-python3 or similar would be better than nothing.

[ofalk]

@simeonmiteff You're right. I should have done that. So, many thanks for opening this issue, so I don't forget about it any more. However, I cannot promise when I can take care about it.