Handle gems with dots in their name

[orien]

Context

The gem change annotation process fails when encountering a gem with a . in its name.

Octokit::UnprocessableEntity: POST https://api.github.com/repos/envato/marketplace/pulls/25214/comments: 422 - Invalid request.
--
  |  
  | No subschema in "oneOf" matched.
  | For 'properties/position', nil is not an integer.
  | "in_reply_to" wasn't supplied.
  | "position" is not a permitted key.
  | "line" wasn't supplied. // See: https://developer.github.com/v3/pulls/comments/#create-a-comment
  | /usr/local/bundle/gems/octokit-4.14.0/lib/octokit/response/raise_error.rb:16:in `on_complete'
  | /usr/local/bundle/gems/faraday-0.17.0/lib/faraday/response.rb:9:in `block in call'
  | /usr/local/bundle/gems/faraday-0.17.0/lib/faraday/response.rb:61:in `on_complete'
  | /usr/local/bundle/gems/faraday-0.17.0/lib/faraday/response.rb:8:in `call'
  | /usr/local/bundle/gems/octokit-4.14.0/lib/octokit/middleware/follow_redirects.rb:73:in `perform_with_redirection'
  | /usr/local/bundle/gems/octokit-4.14.0/lib/octokit/middleware/follow_redirects.rb:61:in `call'
  | /usr/local/bundle/gems/faraday-0.17.0/lib/faraday/request/retry.rb:130:in `call'
  | /usr/local/bundle/gems/faraday-0.17.0/lib/faraday/rack_builder.rb:143:in `build_response'
  | /usr/local/bundle/gems/faraday-0.17.0/lib/faraday/connection.rb:387:in `run_request'
  | /usr/local/bundle/gems/faraday-0.17.0/lib/faraday/connection.rb:175:in `post'
  | /usr/local/bundle/gems/sawyer-0.8.2/lib/sawyer/agent.rb:94:in `call'
  | /usr/local/bundle/gems/octokit-4.14.0/lib/octokit/connection.rb:156:in `request'
  | /usr/local/bundle/gems/octokit-4.14.0/lib/octokit/connection.rb:28:in `post'
  | /usr/local/bundle/gems/octokit-4.14.0/lib/octokit/client/pull_requests.rb:213:in `create_pull_request_comment'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/github/pr_sink.rb:17:in `annotate_change'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/lock_file_annotator.rb:60:in `block (2 levels) in annotate'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/lock_file_diff.rb:19:in `block in each_gem_change'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/lock_file_diff.rb:18:in `each'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/lock_file_diff.rb:18:in `each_gem_change'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/lock_file_annotator.rb:57:in `block in annotate'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/github/pr_source.rb:20:in `block in each_file'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/github/pr_source.rb:19:in `each'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/github/pr_source.rb:19:in `each_file'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/lock_file_annotator.rb:56:in `annotate'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/lock_file_annotator.rb:39:in `annotate_github_pull_request'
  | /usr/local/bundle/gems/unwrappr-0.3.3/lib/unwrappr/cli.rb:34:in `execute'
  | /usr/local/bundle/gems/clamp-1.3.1/lib/clamp/command.rb:66:in `run'
  | /usr/local/bundle/gems/clamp-1.3.1/lib/clamp/subcommand/execution.rb:18:in `execute'
  | /usr/local/bundle/gems/clamp-1.3.1/lib/clamp/command.rb:66:in `run'
  | /usr/local/bundle/gems/clamp-1.3.1/lib/clamp/command.rb:140:in `run'
  | /usr/local/bundle/gems/unwrappr-0.3.3/exe/unwrappr:11:in `<top (required)>'
  | /usr/local/bundle/bin/unwrappr:23:in `load'
  | /usr/local/bundle/bin/unwrappr:23:in `<top (required)>'

It seems it couldn't determine the diff line number on which to add the annotation.

Change

Support annotating gem changes, where the gem name includes a ..

[orien]

Rather than expecting the gem name to consist of only word characters ([a-zA-Z0-9_]), expect it to be a string of non-whitespace characters ([^ \t\r\n\f\v]).

[johnsyweb]

Thanks @orien .