ProtocolError
I can't see why
```
$ nimble publish                                                                                               [git:master]
      Info: Using GitHub API Token in file: /home/arne/.nimble/github_api_token
   Success: Verified as krux02
    Cloning packages into: /tmp/nimble-packages-fork
   Updating the fork
    Prompt: Whitespace separated list of tags?
    Answer: gif image
    Pushing to remote of fork.
       Info Creating PR
Error: unhandled exception: Connection was closed before full request has been made [ProtocolError]
```

```
nimble --version                                                                                             [git:master]
nimble v0.8.8 compiled at 2017-09-25 14:18:51
git hash: fc81b5b58eac62ad5ae89d4e8a28b0a3f4bb8e5b
```