Use octokit/go-octokit instead of jingweno/go-octokit
Bump go-octokit
Remove deprecated scenario for pull request
Rebuild hub when cucumber test starts
Print error to stderr instead of using log
Format API response error
Warn existence of URL
Pass in hub's user agent to go-octokit
Distinguish between filePrefix and topic for Editor
Merge pull request #497 from github/pull_request_compat

gh: Pull request compatibility