An update of Emulicious is available

This update adds undo/redo functionality for debugger run actions. When you notice during stepping that something in your code went wrong you can just undo your last steps and try again.

Furthermore, a Discord Server for Emulicious was launched. A menu item to join this server was added to the Help menu. This server can be joined via the following link: https://discord.gg/YuKjBUF

Additionally, the file Expressions.txt was added which contains explanations and examples on how to use expressions in Emulicious.