FIXED-IN: KDE Applications 18.04
We add a checkbox visible on the main UI to quit Spectacle after save or copy operations. This yields the following benefits:
- We can remove the "Save & Exit" item from the split button
- Users gain the ability to have spectacle quit after copying the image to the clipboard
I tried to make the feature apply to Export operations as well, but that proved to be much more complicated and I decided to abandon that for now and do it later in a subsequent patch.