New features
Cover download: Allowing saving alternate covers to disk or in the book's data folder by right clicking on the cover
Closes tickets: 2020603
Content server: Allow disabling full text search via the web interface
Closes tickets: 2020237
When sending books to the device confirm the overwrite if the book already exists on the device
Closes tickets: 2020233
E-book viewer: Handle horizontal wheel events as section jumps in paged mode
Comic Input: When grayscaling comic images use 16bit gray instead of 8bit for better fidelity
When using the PNG format for images this results in larger files but with better grayscaling fidelity.
Add a new option in Preferences->Searching to disable keyboard searching in book list (i.e. you can turn off the behavior that pressing a key will jump to the first book whose title starts with that letter)
Manage categories dialog: Use alternating row colors and allow adjusting row height
Closes tickets: 2018423
Allow assigning a keyboard shortcut in Preferences->Shortcuts to open the data folder of a book
Various improvements to syntax highlighting for the Markdown long text editor
Bug fixes
Fix a regression in 6.16 that broke restoring of the database
Closes tickets: 2018025
Tag browser: Fix using F2 to edit items not allowing completion
Book details: Fix formatting of text when copying all book details in narrow mode
Book details: Fix copy all not respecting line breaks in fields
Fix a regression in previous release that broke scrolling when using the scroll_per_row tweak
Closes tickets: 2018660
Fix a regression in the previous release that broke the category manager dialog in some situations
Closes tickets: 2018548
New news sources
Irish Times Free by unkn0wn
elEconomista.es and El Confidencial by Hugo Meza
Improved news sources
NYTimes
Economist
Washington Post
Irish Independent and Irish Times
Live Mint
Psych
Hindu
https://calibre-ebook.com