v4.2
Code Quality: Updated headers
Feature: Cycle layouts via scroll wheel (#18670)
Feature: Added an 'Open With...' toolbar flyout (#18581)
Code Quality: Continued working on Shelf Pane (#17308)
Feature: Replaced Settings Dialog with page (#18410)
Code Quality: Add Category, ExtendedLabel, AutomationId and AccessKey to actions (#18308)
Code Quality: Updated license header