This release adds Version History to your projects, as well as the ability to copy paste layers from the past. To do so, go to the main app menu and navigate to File → Version History, or hit ⌘⇧H. You can select and copy any layer while browsing versions. When pasting in the project, you’ll be offered the option to add it as new layer or, if the same layer is found, to replace it in one go. Check out this article to learn more about what’s included and what’s coming next.