* 🎉 New Masonry component optimized for Pinterest-style layouts. Check out the docs (https://github.com/bvaughn/react-virtualized/blob/master/docs/Masonry.md) and demo page (https://bvaughn.github.io/react-virtualized/#/components/Masonry) to learn more. (https://github.com/bvaughn/react-virtualized/pull/618)
* 🎉 MultiGrid supports scrollLeft and scrollTop props for controlled scrolling. (@julianwong94 - https://github.com/bvaughn/react-virtualized/pull/624)
* 🎉 New direction parameter passed to overscanIndicesGetter with values "horizontal" or "vertical". (@offsky - https://github.com/bvaughn/react-virtualized/pull/629)
* ✨ Replaced inline require statement with header import in Grid for better integration with the Rollup module bundler. (@odogono - https://github.com/bvaughn/react-virtualized/pull/617)
* 🐛 Improved guard for edge-case scrolling issue with rubberband scrolling in iOS. (@dtoddtarsi - https://github.com/bvaughn/react-virtualized/pull/616)
* ✨ Replaced getBoundingClientRect() with slightly faster offsetWidth and offsetHeight inside of AutoSizer.
* ✨ AutoSizer no longer re-renders nor calls onResize callback unless width and/or height have changed (depending on which properties are being watched).
