E-book viewer: Add support for highlighting
E-book viewer: Add support for right-to-left and vertical text
Switch calibre to Python 3. This means that some no longer maintained third party plugins will not work.
Dark mode support for the Content server and E-book viewer user interfaces
Content server's in-browser viewer now supports bookmarking. Bookmarks and highlights are auto-synced across devices.
Regular expression engine used for searching the book list and reading metadata from filenames has been made more powerful.32bit