1.28: Multi-window support

New in this (long-delayed) release:

• Multi-window support: One of the longest- and most-requested features finally works in Min. Your open tasks are shared across windows, so you can see all of your open tabs at once, and you can use the task overlay to drag-and-drop tabs between windows.
• Numerous updated translations - thank you to everyone who contributed!
• Improved the spacing and alignment of the tab bar (By @RubenSmn)
• Improved result previews for full-text search results.
• Fix: printing a PDF now works again.
• Fix: Fullscreen didn't work on some embedded videos.
• Updated Chromium.