SwiftUI

SwiftUI is an innovative, exceptionally simple way to build user interfaces across all Apple platforms with the power of Swift. Build user interfaces for any Apple device using just one set of tools and APIs. With a declarative Swift syntax that’s easy to read and natural to write, SwiftUI works seamlessly with new Xcode design tools to keep your code and design perfectly in sync.

Is your feature request related to a problem? Please describe.

Yes, the general prefences view is getting cluttered with preference options.

Describe the solution you'd like

We need to break them up into sections/tabs to keep a clean and consistent look.

Describe alternatives you've considered

N/A

Additional context

N/A

Gifski requires at least 2 frames in the resulting GIF, but users might accidentally trim or choose low enough FPS for the resulting GIF to contain less than 2 frames. We should show a warning in the editor's view in that case.

Right now, we just show an error when the conversion starts:

<img width="472" alt="Screen Shot 2020-10-24 at 16 53 31" src="https://user-images.githubusercontent.com/