* ✨ Improved performance for CellMeasurerCache by removing some unnecessary computations for fixed-width/fixed-height use cases. (@RaviDasari - https://github.com/bvaughn/react-virtualized/pull/676)
* 🐛 MultiGrid ensures correct row/column indices are passed to CellMeasurerCache for top-right and bottom Grids. (https://github.com/bvaughn/react-virtualized/pull/670)
