* Added 1/8" jack
* Release 4.20
* Merge traces and wires into "Wiring" layer
* Add shabang to run.sh
* Added gray theme
* Prevent the donation label from wrapping into several lines
* Use Backspace key to delete selection in Mac OS
* Upgrade xstream to fix java 16 compatibility
* Add exec to run.sh
Bane Stojkovic