Undo or Clear Formats

[drnkwati]

Hi guys
I think it would be nice to add the option of undo, remove or clear formats.
What about the ability to preview editor code
thanks

[drnkwati]

Add this to actions

undo: {
icon: '↺',
title: 'Undo',
result: function result() {
return exec('undo');
}
},
redo: {
icon: '↻',
title: 'redo',
result: function result() {
return exec('redo');
}
},