Visual changes:
New colors and message bubbles
Unified theme
Video playback updates
Disappearing messages can now be enabled without first turning them on with a '1 day' duration
The status of the last conversation message (if outgoing) is now shown in the left pane
One-click access for replying to message
Media Gallery:
Fixed: Wrong attachment would be saved from lightbox after left/right navigation
Better handling of videos - thumbnail of video is now used
Dark theme honored in all UI elements
Icons shown for all if no thumbnail is available
Begin SQLCipher migration. First stage: all messages and temporary message cache.
Fixed: When returning from idle, a conversation would sometimes be missing a set of messages
Fixed: When marking safety number as verified/not verified, that state would not sync to mobile device
Fixed: Deleting conversations with a large history would sometimes fail
Fixed: Sometimes triple-dot menu for replying to message would show up off-screen
Fixed: In some cases, messages would show up out of order. This should now be far less common.
Update localization strings
Dev:
New version 8 schema for messages: thumbnails and dimensions from image and video attachments, as well as a full-size video screenshot for use in conversation view
Much of the application has been moved to React
Dark theme rewritten from scratch
New CSS is now using Block Element Modifier syntax (BEM) for info:
http://getbem.com/JSHint removed from project; ESLint now scans entire project
_locales/en/messages.json is now included in jsprettier runs
All backbone-related functionality removed from Style Guide
Ensure set of Linux dev dependencies is complete in Contributing.md
Introduce mandatory migration on startup, to minimum version 7
Preserve migration state when deleting config due to failed login
Conversation: store lastMessage/lastMessageStatus in memory only
Moved to using window.log only for all browser-context logging, with new eslint rule to prevent direct use of console.log
Full eslintification of files in libtextsecure to take advantage of new console.log rule
Removed unnecessary and too-verbose console logging
When making thumbnail for video attachment to be sent, we generate a 100x100 preview instead of taking a full screenshot of the video