- [BREAKING] ResizeObserver now always expects a function as a child, to which it passes in a reference as an argument that can be added to the element to be observed.
- [BREAKING] Returning width and height as the second and third parameters instead of as part of an object
- [BREAKING] Now reports 1x1 size on before the observer is triggered instead of 0x0
- Added tests using Karma
- Relaxed the prop-types dep
- Initial release