Thunderbird 60.6.1 Email Client for PC Windows

# New
- SVG images can be used as favicons
- Firefox Hello now includes instant messaging
- Enhance IME support on Windows (Vista +) using TSF (Text Services Framework)
- Ability to set a profile picture for your Firefox Account
# Changed
- Type 2 Add-ons (Extensions) that have not been signed by Mozilla will be disabled by default. Read more about Add-on signing in Firefox
- Memory overhead of AdBlock Plus has been greatly reduced
- WebRTC now requires perfect forward secrecy
- WARP is disabled on windows 7
- Improved image decoding with performance up to twice as fast on some devices especially while scrolling
- Smoother and more reliable CSS animations via asynchronous animations
# HTML5
- CSS Font Loading API enabled by default
- Copy/Cut Web content from JavaScript with document.execCommand("cut"/"copy")
- MessageChannel and MessagePort API enabled by default
- Navigator.onLine now varies with actual internet connectivity (Windows and Mac OS X only)
- Added support for the transform-origin property on SVG elements
- Implemented Cache API for querying named caches that are accessible window, Worker, and ServiceWorker
# Developer
- Screenshot a node or element from markup view with the Screenshot Node context menu item
- Copy element CSS rule declarations with the Copy Rule Declaration context menu item in the Inspector
- Network requests can be exported in HAR format
- Removed support for binary XPCOM components in extensions, use addon SDK "system/child_process" pipe mechanism for native binaries instead
- Pseudo-Class panel in the Inspector
- View HTML source in a tab
- Quickly add new CSS rule with New Rule button in the Inspector
# Fixed
- Picture element does not react to resize/viewport changes

# Changed
- Hardware acceleration is now disabled by default to avoid crashing Thunderbird
# Fixed
- A few bugs have been fixed to avoid crashing Thunderbird

# New
- Support for Windows 10 including tablet mode
- Download protection from potentially unwanted software
-Suggested Tiles show sites that may be of interest, based on categories from your recent browsing history
- Add URLs to a Hello conversation for additional context
- New style for add-on manager based on the in-content preferences style
- Smoother and more reliable CSS animations via asynchronous animations
- Improved scrolling, graphics, and video playback performance with off main thread compositing (GNU/Linux)
# Changed
- Add-on extensions that are not signed by Mozilla will display a warning
- Smoother animation and scrolling with hardware vsync (Windows only)
- JPEG images use less memory when scaled and can be painted faster
# HTML5
- Support for new Unicode 8.0 skin tone emoji
- IndexedDB transactions are now non-durable by default
- Implemented AudioBufferSourceNode.detune to modulate playback rate in cents
# Developer
- Improved Performance tools in the developer tools
- New rules view tooltip to tweak CSS Filter values
- New page ruler highlighting tool that displays lightweight horizontal and vertical rules on a page
- Console API messages from SharedWorker and ServiceWorker are now displayed in web console
- Inspector now searches across all content frames in a page
- Places Keywords API has been deprecated, update to the Asynchronous Keywords API
- Removed support for binary XPCOM components in extensions, use addon SDK "system/child_process" pipe mechanism for native binaries instead
# Fixed
- Kannada text does not display properly in built-in pdf viewer

# Fixed
- Copy/Paste into plain text editor deletes newlines from quoted text
- Cross-posts won't send because Newsgroups: groups are separated with comma+space, not just comma
- Cannot send email through exchange server (NTLM)
- Doesn't display GB2312 encoded texts correctly for Chinese Characters
- OAuth2 authentication for GMail does not work when specified server is imap.gmail.com or smtp.gmail.com.

# New
- GMail supports OAuth2 authentication, removing the need to manually select "allow less secure applications" in Google options for the account.
- Ship Lightning calendar addon with Thunderbird and enable with an opt-out dialog
- Filter sent messages
- Filter messages when archived
- Enable search in multiple/all address books
- Add support for Yahoo Messenger in Chat
- Support Internationalized domain name URLs for RSS feeds
- Show expanded columns in folder pane
- Allow file-per-message (maildir) local message storage
- Add a Learn more link to the support page in feeds subscribe dialog
- Add reading position marker line to conversations
- The editor for twitter should show inputtable character count
# Changed
- Thunderbird will no longer use SHA-1 to sign messages
- Removed rarely used character sets: T.61-8bit, non-encoding Mac encoders, VISCII, x-viet-tcvn5712, x-viet-vps x-johab, ARMSCII8 , map us-ascii to windows-1252, ISO-8859-6-I and -E and ISO-8859-8-E, (
- Disable CONDSTORE support for IMAP to prevent discrepancies in IMAP message status (deleted, unread) on some servers
- Make OpenSearch queries open in the user's default browser
- Default to using SSL for XMPP and IRC. This might cause issues for self-signed certificates
# Fixed
- Replied/forwarded icons disappear after folder repair, detach/delete
- Attachment "Save As" files are displayed in Tools/Saved Files
- Adding unknown email addresses to Mailing list, then deleting ghost duplicate entries from contacts pane, caused dataloss in mailing list
- Web site from RSS feed was not rendered correctly
- Email address with leading/trailing whitespace displayed wrongly with added quotes when composing ["foo"@bar.com]
- Force display of Sender header if S/MIME sender is the signer
- Addressing autocomplete widget: Typed text in red despite results/matches found if suggestions change by last input
- Status bar not accessible
- Wrong folder may be deleted when requesting junk delete
- Severe UI stutter or freezes getting new mail for very large folders
- Automatically rejoin multi-user conversations on reconnect for XMPP
- Various improvements when using IRC on moznet
- Significantly improve XMPP support
- Fixes for connecting to non-standard IRC networks
- Automatically reclaim IRC nicks during a reconnect
- Changing location in editor doesn't preserve the font when returning to end of text/line
- Inline spell checker loses red underlines after a backspace is used

# New
- New tab-based Preferences
- Share the active tab or window in a Hello conversation - enabled for first half of the beta cycle
- Keep track of articles and blog posts with the Reading List - enabled for the first half of the beta cycle
- Ruby annotation support
- Base for the next ESR release.
# Changed
- autocomplete=off is no longer supported for username/password fields
- URL parser avoids doing percent encoding when setting the Fragment part of the URL, and percent decoding when getting the Fragment in line with the URL spec
- RegExp.prototype.source now returns "(?:)" instead of the empty string for empty regular expressions
- Page load times improved by speculative connection warmup
# HTML5
- WebSocket now available in Web Workers
- Implemented srcset attribute and <picture> element for responsive images
- Implemented DOM3 Events KeyboardEvent.code
- BroadcastChannel API implemented (more at hacks.mozilla.org)
- Mac OS X: Implemented a subset of the Media Source Extensions (MSE) API to allow native HTML5 playback on YouTube
- Implemented Encrypted Media Extensions (EME) API to support encrypted HTML5 video/audio playback
- Automatically download Adobe Primetime Content Decryption Module (CDM) for DRM playback through EME
# Developer
- Optimized-out variables are now visible in Debugger UI
- XMLHttpRequest logs in the web console are now visually labelled and can be filtered separately from regular network requests
- copy command added to console
- WebRTC now has multistream and renegotiation support

- Security fixes