v0.1.4

Fixed

• Layout cache now seeds when an element transitions from hidden to
  visible. The v0.1.3 fix stopped caching a bogus (0, 0) for elements
  inside a display: none ancestor, but the cache stayed empty until
  the first DOM mutation while visible — and by that point the move
  had already happened, leaving FLIP without a pre-move position to
  animate from. An IntersectionObserver now watches every tracked
  element and seeds the cache the moment visibility changes.