• Added Brazilian Portuguese (pt-BR) translation - @sasnascimento
• Added Japanse(ja) translation - @theluckystrike
• Added Turkish (tr) translation - @omertahaoztop
• Sync rework - docs/SYNC_REWORK.md
• Improved debug/logging
• Fixed login by sending IMAP ID to servers that require it - #457
• "Mark all as read/unread" on a folder can now include mail older than the sync period (asks when there is any) - #458
• Empty folders now say when there are messages older than the sync period
• Gmail accounts archive to All Mail by default - #464
• Fixed shutdown/reboot when Aerion running in the background (SIGTERM now quits) - #460
• Fixed attachment save failing when the Downloads folder has been moved or does not exist - #474
• HTML signatures and pasted HTML keep their inline styles, link colours, image sizes, fonts and web-font links in the composer - #110
• Fixed the signature editor showing blank after switching from HTML back to visual mode
• Fixed extra blank space under images in the composer and signature editor
• Fixed the reading pane showing a blank "(No subject)" conversation after deleting a message - #260
• Fixed mouse-dead UI after the first-run dialogs - #448
• Fixed sync stalling on an empty-subject message from servers that send a malformed ENVELOPE - #463
• Fixed merged duplicate messages staying unread and leaving copies behind on delete/move (actions now apply to every copy in the folder)
• Calendar: changing an event's start now moves the end to keep the duration - #466
• Calendar: events with Windows time zone IDs (Outlook invites) now sync and expand correctly - #467
• Fixed the message list not highlighting the message opened from a notification click
• Add Account: Fixed Account Name and Username refilling after being cleared - #451
• Confined auto-fill to Add Account
• Add Account: Removed auto-capitalizing account name on auto-fill