**New features:**
* Added filtering of language view
* Allow download of archived books
* Add button to force full kobo sync
* New user language: korean
**Bug Fixes:**
* Fix position read mark in standard theme
* Fix grid to list button in series view
* Fix sort ascending, descending in author and series list
* Fix for Epub viewer isn't displaying images
* Fix shelf grid ordering for inverted order at page load
* Sorting buttons now visible on medium size screens
* "Fetch metadata" update appends to the existing tags instead or replacing them
* Exclude upload rights visibility if upload is not activated
* Delete book setting only visible if edit book setting is ticked
* Current sorting order visible in all sidebar selectors, and search results
* Check versions of dependencies at startup and generate logfile output if not matching
* Fix which cover are visible in series grid view
* Sorting "hot" books only ascending and descending according to download numbers
* Downloaded books sorting according to authors name now working
* Fixed missing handle_error in convert calibre task (database readonly case)
* Fix opds search and opds list of read books
* Added some missing supported book languages and unknown book languages don't lead to error message
* Improved handling of invalid cover files on upload
* Bugfix show all allowed languages in user settings in case restrictions currently apply
* Bugfix search in books list
* Fixed KoboSynce in general and in multiuser environment
* Unicode texts (title, author) are showing up right on kobo reader
* Added some missing kobo routes (prevents 404 response)
* Kobo Sync token only updated after complete library sync
* Guest sorting options are now stored in the browser session
* Visibility of upload buttons now depends only on upload right and no more on admin right
* Bugfix edit series_index
* Delete books in shelfs, downloaded books, kobo sync status, etc on database change
* Improved handling of calibre output on windows
* Catch more Gdrive errors
* Bugfix advanced search for language
* Bugfix uncheck all elements in books list and user list
* Whitespaces are trimmed also for normal search
* Better version output in about page
* Load metadata including loading from google-scholary is working again
* Deleting users now deletes also depending entries in all tables
* Prevent 2 public shelfs with same names due to changing public property (thanks to alicaz)
* Security fix: Changed error message in case of trying to delete a shelf unauthorized
* Security fix: Added missing check for creating public shelfs
* Security fix: Fix upload of cover and book formats containing html characters
* Security fix: Migrated some routes to POST-requests (CSRF protection)
* Security fix: Fix for "javascript:" script links in identifier