Timeline template for use on year and day pages. A scrollable timeline will automatically appear on year pages. Years must be manually added as new year pages become available.
- prev : Previous year (don't link)
- next : Next year (don't link)
- override (boolean) : Override the year page detection and show the scrollable year timeline anyway (needed for Pre-1922)
- standalone (boolean) : Hide the previous and next buttons (for showing on a non-year page)