gh_metric_issues.RdCalculates metrics of interest for open source health based on the issue
metadata using the
columns fullname, state, days_open, days_no_activity.
gh_metric_issues(issues)A dataframe of issues
full_name: repo full name
open_issues: total open issues
median_age_open_issue: median time open issues have been open
median_inactivity_open_issue: median time an open issue has been inactive