Adds changelog

 - Break vue component into smaller components and bundle them
 - Improve the help state UX to look like this: #985 (comment 16056031)
 - Create helpers for props existence checking !870 (comment 18534273)
 - Standardize on camelCase where possible, improve naming with computed values
 - Be clear about using human values from the server vs client
 - Consider & address the accessibility impact of only displaying the remaining
  time in a tooltip and the percentage of time spent in a colored meter.
 - Fix help 'Learn more' URLAppend state computed values with 'State'.