Slug missing from manifest handshake response

[rpelliard]

The AppConfig struct, used to represent the result of a manifest handshake, seems to be missing the slug field which is returned by GitHub.
Is that on purpose, or should it be added ?

Happy to submit a PR to add it, let me know.

[gmlewis]

Thank you, @rpelliard .
It is not intentional. Please feel free to submit a PR.

Please check out our CONTRIBUTING.md file for helpful information.

[rpelliard]

@gmlewis Here it is: #2029