Backspace and/or Arrow Keys handling

[jclds139]

Is it feasible to add some basic line-editing to this library? Just handling the backspace key alone would make a huge difference since it would enable fixing mistakes when typing commands.

[CreativeRobotics]

I can take a look, but you can already do this by configuring your serial terminal app so it only sends a line when you hit 'enter'. That way you can delete and change what you are typing before it gets sent to commander - as far as I know, this is the default on the Arduino serial terminal, you type text into the text entry field and either clock send, or hit 'enter', then everything you typed gets sent in one go.