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