Update interactions.md with the currently anticipated work.
Add spec for JobList#to_array in anticipation of creating JobListReportGenerator and JobListReport.
Add JobList#to_array (public) to fulfill the latest spec.
Add spec for reports generated by JobListReportGenerator.
Refactor the code specific to JobseekerListReport and RecruiterListReport out of ListReport and into the new GeneratesReportsOfNames module.
Add Title#to_string in anticipation of using it in ListReports.
Update JobListReportGenerator spec to check for a String that is closer to an actual example JobListReport output.
Add Job#title_to_string in anticpation of using that in JobApplicationListReport.
Replace job_report_spec.rb with posting_report_spec.rb, as PostingLists were the intended subject of the new ListReports in the first place.
Make List#to_array public (instead of private) since most, if not all, of its consuming classes will need it anyway.
Update posting_report_spec.rb so that its PostingList is actually populated with Postings (as opposed to Jobs).
Add PostingListReport and PostingListReportGenerator, fulfilling the most recent spec.
Update interactions.md with the latest feature addition.