Temporary Linux test build for issue #120.
This is versioned 0.0.0 on purpose so it is clearly a dev/test build, not a normal release.
What should be improved here:
- --unclickable should be picked up more reliably.
- click-through should not immediately turn itself off during startup.
- launching a second window with flags should behave more consistently.
Still needs testing on a real Linux desktop under Wayland. --pin may still be limited by Wayland / the desktop compositor, so that part may need more work or a documented workaround.