Slack for Windows

What's new in this version:

Fixes:
- Mailspring now displays unread mail notifications reliably, fixing a race-condition that occurred when new messages were synced too fast
- You can now re-order your email acccounts via drag and drop in Preferences > Accounts
- Mailspring always displays non-inline image attachments as files in the composer. Previously they looked identical to inline images
- The French, Slovenian, Portuguese, German, Tamil, and Chinese translations have been improved
- Mailspring does a better job removing quoted text formatted by very old versions of Outlook
- Mailspring no longer freezes when you type al ink with a "#hash" and then press return
- On Linux and Windows, the system tray no longer turns blue whenever the app's window is hidden
- A new option in Preferences > General allows you to disable the shortening of recipient names
- A new option in Preferences > General allows you to expand message headers by default
- Mailspring's icon now appears square in the Windows Start menu
- You can now dismiss Mailspring's upgrade prompt on Linux
- Social links in Mailspring's sidebar now properly contain the www. prefix when required
- You can now type date shorthands (eg: "2d" or "2w") into the snooze date picker