Adds fixture variants that keep an identical transform animation and vary only
its surroundings — inside a button, under a filtered, clipped, blurred,
transformed or faded ancestor — plus the repository's own spinner overrides
isolated piece by piece. Adds --filler, which pads the page with static
elements, because a variant that costs nothing on a small page is not proven
free in a real document.
All of them measure zero style recalculations per second, including at 15,000
filler elements, which rules out ancestor context, the custom keyframes,
transform-box and document size as explanations for the cost the same spinner
shows inside the application.
Bohdan Triapitsyn
51d814307f