isFirstIssue() won't work in case author has only PRs in their recent history

[kartben]

The way isFirstIssue() works today makes it sometimes improperly flag an issue as "new" if the only types of issues/PRs found in the list returned by "listForRepo" is PRs

  const {status, data: issues} = await client.rest.issues.listForRepo({
    owner: owner,
    repo: repo,
    creator: sender,
    state: 'all'
  }); 

  // ...

  for (const issue of issues) {
    if (issue.number < curIssueNumber && !issue.pull_request) {
      return false;
    }
  }

[github-actions]

Hello! Thank you for filing an issue.

If this is a bug report, please include relevant logs to help us debug the problem.

[ncalteen]

This should be fixed by #296 :) This approach uses GraphQL instead of the REST API, which will let you filter by the type (issue/PR) and creator.