**New features:**
* Cover images are cached when using gdrive storage and local storage
* Kobo sync now uses calibre-web generated thumbnails as cover pictures
* Pagination button disapear in standard theme once infinite scroll is triggered
* Added "None" to list of file formats, tags, series, languages
* Extract publishing date, identifier from epubs after upload
* Added basic themes to epub reader
* Allow "" in imported ldap usernames
* Allow sending epub files to amazon kindle
**Bug Fixes:**
* Read status checkbox works again for custom columns
* Character '\u200d' is removed from end of email address and no longer causes an error on send emails
* Gevent log output is redirected to log file and no longer stops Calibre-web on Windows
* custom column of type "Text, but with a fixed set of permitted values" with default color no longer leads to error 500
* Permission problems while accessing the robots file are now handled better
* Fix for missing "query" entry in flask_session
* Handle empty response from lubimyczytac metadata provider
* Fix cover upload url with spaces at the end
* Support image/jpg as upload format
* Prevent "none" comment from uploaded pdf documents
* Prevent converting of kepubs on every new user