reset/restore image initial aspect

[defranco]

Hi! 

how do I restore an image initial aspect? 

For example, if a have an image 200x100   (aspect 2:1) and accidentally change its width/height  to a different aspect  300x100 (aspect 3:1) - how to I restore it to 2:1 aspect? 

After I change the aspect the only way I know to restore the aspect is to entering manually the image initial width/height or deleting it and adding it again - there is no lead or indicator of the initial image aspect unless I open the image again.

It would great to have menu or property option to restore its original.

Thank you