Fixed: Thumbnail view scrolling was not synchronized to the document scrolling.
So when scrolling the document, current page's thumbnail should scroll into the view automatically.

Added: New property DocumentViewer.RememberViewHistory:
Gets or sets a value that specifies whether for each document fingerprint, the document viewer should remember UI state via browser's local storage,
i.e. last viewed page, zoom level, scroll position, rotation, SidebarView, ScrollMode, SpreadMode.
The default is true.

If you want the document viewer to discard any view history entries and always load all documents at the first page
(and with default zoom values), then you should set this property to false.

In previous versions, DocumentViewer behaved as if this property was set to true.

Fixed: In thumbnail view, when there are few thumbnails like 2 or 3, they should not be vertically centered (avoid large gaps).

Fixed: Setting DocumentViewer.ZoomLevel property was not working. Normally when it's set to a non-zero percentage value,
that should override the DocumentViewer.ZoomMode property.