v0.7.7.1 - Icebreaker scene - Layers, Copy/Paste, Machines draw

- new pre-made machine "Icebreaker" scene
- multi layer machines editor
- CTRL+V for instant paste of the current selection copy at mouse position
- Draw: draw by grid, pipes, smooth lines
- tools menu highlights

* Also, 5 June 2024 - 4 years of Early Access

Happy Summer 2024