midscroll v1.12

Feature release adding a toggle for whether midscroll runs on the desktop and
panels, off by default so a middle-drag can no longer hijack the desktop.

Added

• Desktop & panels toggle (DESKTOP_SCROLL). By default midscroll now
  pauses while a desktop shell is focused, so a middle-drag over the desktop or
  a panel no longer hijacks it (on KDE it used to switch virtual desktops); the
  middle button behaves natively there instead. Covers plasmashell,
  nemo-desktop, xfdesktop, waybar, xfce4-panel, and GNOME Shell
  (org.gnome.shell / gjs). Turn it on with Enable on desktop & panels in
  the settings GUI, DESKTOP_SCROLL = true in the config, or --desktop on the
  command line. Kept separate from the app blacklist, so your custom entries
  stay clean.

Notes

• Off by default; existing setups gain the desktop/panel pause automatically on
  upgrade, with no config change needed.
• Packaging bumped for Fedora (RPM), Debian (deb), and Arch (PKGBUILD).

Full changelog: v1.11...v1.12