v3.9.0

• Series view can now include standalone books: set a series chip's filter to Series: "Standalone and books in series" to mix single books in with the stacks, or "Only standalone books" for just those (#160)
• Option to fade finished books, alongside the completed-badge setting (#138)
• Separate animation speed settings for page turns and the start menu (#259)
• New gesture actions to flip the chip bar's page: next/previous page of chips (#257)
• Start menu: dividers now have the same "Show in" option as other entries (#256)
• Start menu: blank an entry's name to show just its icon (#207)
• System actions added to menus get a default lightning-bolt icon (#252)
• The Back button now steps up one level inside a chip's folders (#239)
• Faster first open of the Quote of the day module after a restart (#247)
• Fixed: co-authored fb2/fb2.zip books appeared under one combined author instead of under each author (#242)
• Fixed: status filters hid folders with books nested more than three levels deep (#202)
• Fixed: swiping the hero card after paging jumped the shelf back to page 1 (#226)
• Fixed: long quotes hid the title and author line on the Quote of the day card (#249)
• New translation: Portuguese (Portugal) (#250)