Add all basic editing functions to "Edit" menu

[gllms]

Add all basic editing functions to "Edit" menu

[gentleadam]

• Redo

[gentleadam]

Sorry mate. Been busy recently and haven't had a lot of time to spend on this. I'm still keeping an eye on your progress.

[gllms]

@milkshakespoon, do you want to do this issue, without me suddenly doing it? 😁

[gllms]

Or do you want me to do it?

[gllms]

Redo is actually the same as doing Undo twice at this point, because you undo your undo.
We could change that by manually updating a history list everytime the TextBox changes and going back and forth in that list by pressing the Undo and Redo buttons.