New features
Server: Add a new ‘custom’ mode for the book list, where you can specify exactly what metadata fields are displayed, via a template (see Preferences->Sharing over the net->Book list template)
Speed up HTML parsing by an order of magnitude, by switching from html5lib to html5-parser
Add support for touch screens to the main calibre book list. You can now flick to scroll, tap to select and double-tap to view books.
Server: Add an option to ban IP addresses if there are too many failed login attempts
calibre-debug: Change the –explode-book action to only create the exploded directory and not rebuild the file. Add a new –implode-book action to rebuild the file, separately.
Book details panel: Add Manage authors/series/tags/etc. to the menu when right clicking on the item
Kobo driver: Update for new firmware
Bug fixes
PDF Output: Fix a regression in 2.82 that caused conversion of comics to PDF files to have successive images become smaller and smaller in some circumstances.Closes tickets: 1706814
PDF Output: Fix a regression in 2.83 that caused occasional blank pages at the end of chapters when using headers/footers.Closes tickets: 1706484
Get books: Update store plugins for ebook.nl and the various amazon websites
Edit book: Hide editor toolbars if they are empty.Closes tickets: 1706343
Server: Fix failed login attempts using digest auth not being logged to the main log
Quickview: for non-text fields, sort on native values instead of text.
Fix hidden search bar state not being restored on calibre restart.Closes tickets: 1705916
Fix option to not save cover separately when using Save to disk not working.Closes tickets: 1704925
Server: Fix an error on browsers that do not support blob storage in IndexedDB.Closes tickets: 1704912
Comic input: Fix a bug in the normalize image filter that caused a crash when converting comics that contain a page with only a single color.Closes tickets: 1704778
Edit Book: Handle non-normalized unicode characters in file names betterCloses tickets: 1704225
Improved news sources
Mediapart
New Yorker
Boston Globe
Private Eye
http://calibre-ebook.com/