Fix animation race condition on Safari

[apiv]

Fixes #192 :

On Safari, there is a race condition, in which the @keyframes are added to the <StyleSheet> on the page after the animationName style property is added to the styled element. Safari doesn't find the animation, and doesn't refresh those elements when the animation is added to the stylesheet.

Looking at the code, the update of the global stylesheet (src/components/style-sheet.js:43) is deferred by 0 milliseconds, while the addition of the style rule to the element is synchronous. This would cause the race condition described above.

This PR removes the debouncing from the CSS change listener, but leaves the debounce in componentDidMount intact.

[coveralls]

Coverage remained the same at 94.616% when pulling a2e3098 on apiv:master into da33b8f on FormidableLabs:master.

[coveralls]

Coverage remained the same at 94.616% when pulling a2e3098 on apiv:master into da33b8f on FormidableLabs:master.

[coveralls]

Coverage remained the same at 94.616% when pulling a2e3098 on apiv:master into da33b8f on FormidableLabs:master.

[apiv]

Closing because the same problem is solved by #989