Files v0.1.12

• Windows: Files has its own AppUserModelID (dev.fileforce.files), set by the app and on the Start menu shortcut, so its notifications show Files' name and icon and its windows group under one taskbar button.
• Linux: Files writes its desktop entry and icon to your user folders (menus, notifications and "Open with" know it), and Settings → Default apps can make it the default file manager (folders from the desktop, browsers' "Show in folder", other apps).
• Started with a folder or file (file-force ~/Music, file:// addresses), Files opens it.
• System notifications: notifications also reach macOS Notification Center, the Windows action center and Linux desktop notifications. Settings → Sound → System notifications: never, when Files is in the background (default) or always; all, warnings and errors, or errors only; and a test button.
• Settings → Storage: a ring chart of what Files keeps on disk (thumbnails, extensions' caches, forks, the search index, sounds), each kind with its size and a Clear button, plus Clear all. Forks are shown but never deleted from here.
• SDK: files_sdk::storage gives each extension its own cache folder (cache_dir, cache_file, usage, clear, touch). Settings → Storage lists every extension's cache with its size and a Clear button, and the cache limit covers it.
• Music and SSH keep their caches through files_sdk::storage: Music's tracks and covers (moved over from the old temp folder at the first start) and files opened from SSH servers show as their own rows under Extensions.
• Cache limit on a slider (1 GB by default; 256 MB to 20 GB or none): past it, files used least recently are deleted first.
• Music covers are stored scaled down (96 and 480 px) instead of full size, so long libraries no longer fill memory with multi-megabyte pictures.
• Updates: Install & Relaunch installs the verified update and starts the
  new version: Windows runs the installer (with its progress bar),
  macOS replaces the app from the disk image, Linux replaces the AppImage.
  If that cannot be done, the installer opens as before.
• Notifications appear at the bottom right, above everything (dialogs
  too), newest at the bottom.
• Extensions SDK: files_sdk::audio plays a notification chime, a sound
  from a file or the web, or tracks in the app's music player (Now
  Playing, media keys), with pause / resume / next / previous / stop. It
  needs the new Sound permission, which users can revoke.

Installing: the builds are not signed by Apple or Microsoft yet.
macOS: open it once, then System Settings → Privacy & Security → Open Anyway.
Windows: SmartScreen → More info → Run anyway.
Linux: chmod +x the AppImage.