Superglue/Editor @ 5f679128a95d9c90514e1ac2806a4f352d4b8a09

Michael 5f679128a9 fixed undo for layering		10 роки тому
..
allplatforms	5f679128a9 fixed undo for layering	10 роки тому
chromium	bcc86cdfd2 undo for moving with arrow keys	10 роки тому
firefox	bcc86cdfd2 undo for moving with arrow keys	10 роки тому