CopyStack 1.1.0
Signed and notarized by Apple - no more right-click > Open on first launch.
Automatic updates - CopyStack now keeps itself up to date: it downloads new releases, verifies their signature, installs, and restarts on its own.
Install: download CopyStack.dmg, open it, and drag Copy Stack into Applications, then grant Accessibility permission when prompted.
Updating from 1.0.0: use the in-app update prompt or reinstall from this DMG. Because the signing identity changed (self-signed to Developer ID), macOS will ask you to re-grant Accessibility permission once.