Animated GIFs can now be controlled via Actions.
New features:
Added "Play GIFs" actions: Play, Pause, Stop, Restart, Set Frame and Set Repeat Count.
Added a number of GIF Controls to a Widget. You can find them by expanding the GIF Control property:
Auto Start: automatically play this GIF as soon as it becomes visible.
Repeat Count: how many times to repeat the animation after it starts playing. Use -1 for infinite looping and 0 to use the repeat behavior from the source file.
These properties were originally in the Image, but were now moved to the Widget that hosts the GIF as you may want to control these on a per-widget basis.
Added 'Animate in Editor' property to an Image. If disabled, the animations on a Widget will not play in the Theme Editor.
Added GIF controls to the Image Editor view, allowing you to start, pause, stop and seek to a specific frame of an animated GIF in the editor.