react-virtualized/CHANGELOG.md

React components for efficiently rendering large, scrollable lists and tabular data

## Changelog

##### 9.21.2

- 🎉 Update prettier ([wuweiweiwu](https://github.com/wuweiweiwu) - [#1455](https://github.com/bvaughn/react-virtualized/pull/1455))
- 🎉 Remove slack from documentation ([wuweiweiwu](https://github.com/wuweiweiwu) - [#1417](https://github.com/bvaughn/react-virtualized/pull/1417))
- 🐛 Fix masionry scroll handler target ([chinmay17](https://github.com/chinmay17) - [#1420](https://github.com/bvaughn/react-virtualized/pull/1420))
- 🎉 AutoSizer upport for multi window ([mbman](https://github.com/mbman) - [#1421](https://github.com/bvaughn/react-virtualized/pull/1421))
- 🎉 Upgrade dom-helpers ([dominykas](https://github.com/dominykas) - [#1424](https://github.com/bvaughn/react-virtualized/pull/1424))
- 🎉 Remove react-vtree from docs ([Lodin](https://github.com/Lodin) - [#1415](https://github.com/bvaughn/react-virtualized/pull/1415))
- 🐛 Fix detection of chrome ([nifgraup](https://github.com/nifgraup) - [#1355](https://github.com/bvaughn/react-virtualized/pull/1355))
- 🐛 Fix hostname issues for images ([nickstew](https://github.com/nickstew) - [#1401](https://github.com/bvaughn/react-virtualized/pull/1401))
- 🐛 Fix aria attributes on Table ([eps1lon](https://github.com/eps1lon) - [#1380](https://github.com/bvaughn/react-virtualized/pull/1380))

##### 9.21.1

- 🐛 Fix doc typos. ([tienpham94](https://github.com/tienpham94) - [#1268](https://github.com/bvaughn/react-virtualized/pull/1268))
- 🐛 Fix typos in changelog. ([misacorn](https://github.com/misacorn) - [#1267](https://github.com/bvaughn/react-virtualized/pull/1267))
- 🐛 Fix formatting in AutoSizer.md ([jacklee814](https://github.com/jacklee814) - [#1246](https://github.com/bvaughn/react-virtualized/pull/1246))
- 🐛 Fix usage of reduce in InfiniteLoader ([jedwards1211](https://github.com/jedwards1211) - [#1277](https://github.com/bvaughn/react-virtualized/pull/1277))
- 🎉 Migrate from classnames to clsx ([TrySound](https://github.com/TrySound) - [#1306](https://github.com/bvaughn/react-virtualized/pull/1306))
- 🐛 Ensure a string title for header ([oakfang](https://github.com/oakfang) - [#1321](https://github.com/bvaughn/react-virtualized/pull/1321))
- 🎉 Use sparse array for cell position caches ([trxcllnt](https://github.com/trxcllnt) - [#1312](https://github.com/bvaughn/react-virtualized/pull/1312))
- 🐛 Fix scrollToPosition ([jaycrypto](https://github.com/jaycrypto) - [#1288](https://github.com/bvaughn/react-virtualized/pull/1288))

##### 9.21.0

- 🎉 Added new use case example for CellMeasurer. ([wuweiweiwu](https://github.com/wuweiweiwu) - [#1168](https://github.com/bvaughn/react-virtualized/pull/1168))
- 🎉 Added react-timeline-9000 as a related library. ([vasdee](https://github.com/vasdee) - [#1197](https://github.com/bvaughn/react-virtualized/pull/1197))
- 🐛 Fix CellMeasurer docs with correct import statement. ([skipjack](https://github.com/skipjack) - [#1187](https://github.com/bvaughn/react-virtualized/pull/1187))
- 🐛 Fix broken Slack badge. ([slieshke](https://github.com/slieshke) - [#1205](https://github.com/bvaughn/react-virtualized/pull/1205))
- 🐛 Fix type in CellMeasurer example. ([rloqvist](https://github.com/rloqvist) - [#1190](https://github.com/bvaughn/react-virtualized/pull/1190))
- 🐛 Fix Table aria attributes. ([jsomsanith](https://github.com/jsomsanith) - [#1208](https://github.com/bvaughn/react-virtualized/pull/1208))
- 🐛 Removed unused variable in Masonry example. ([ignocide](https://github.com/ignocide) - [#1218](https://github.com/bvaughn/react-virtualized/pull/1218))
- 🎉 Add onColumnClick to Table. ([grahamlyus](https://github.com/grahamlyus) - [#1207](https://github.com/bvaughn/react-virtualized/pull/1207))
- 🎉 Allow users to override default table row styles. ([emroussel](https://github.com/emroussel) - [#1175](https://github.com/bvaughn/react-virtualized/pull/1175))

##### 9.20.1

- 🐛 Removing `sideEffects: false` from package.json. ([wuweiweiwu](https://github.com/wuweiweiwu) - [#1163](https://github.com/bvaughn/react-virtualized/pull/1163))
- 🐛 Prevent early `debounceScrollEndedCallback`. ([Gvozd](https://github.com/Gvozd) - [#1141](https://github.com/bvaughn/react-virtualized/pull/1141))
- 🐛 Fix `scrollToIndex` behavior in `InfiniteLoader`. ([mengdage](https://github.com/mengdage), [dcolens](https://github.com/dcolens) - [#1154](https://github.com/bvaughn/react-virtualized/pull/1154))

##### 9.20.0

- 🎉 Code of Conduct and updated Issue/PR templates. ([aem](https://github.com/aem) - [#1052](https://github.com/bvaughn/react-virtualized/pull/1052))
- 🐛 Make scrollTo{Column,Row} take precedence over scroll{Left,Top}. ([wuweiweiwu](https://github.com/wuweiweiwu) - [#1130](https://github.com/bvaughn/react-virtualized/pull/1130))
- 🐛 No `setState(null)`. ([wuweiweiwu](https://github.com/wuweiweiwu) - [#1129](https://github.com/bvaughn/react-virtualized/pull/1129))
- 🎉 New `isScrollingOptOut` prop for `Grid` that prevents re-rendering on scroll-end. ([wuweiweiwu](https://github.com/wuweiweiwu) - [#1131](https://github.com/bvaughn/react-virtualized/pull/1131))
- 🐛 Updated npm badge link. ([SpainTrain](https://github.com/SpainTrain) - [#1146](https://github.com/bvaughn/react-virtualized/pull/1146))

##### 9.19.1

- Updated [react-lifecycles-compat](https://github.com/reactjs/react-lifecycles-compat) to 3.0.4. ([pigcan](https://github.com/pigcan) - [#1114](https://github.com/bvaughn/react-virtualized/pull/1114))

##### 9.19.0

- Replaced `componentWillMount`, `componentWillReceiveProps`, and `componentWillUpdate` with async-safe lifecycles in advance of React 16.x deprecation warnings. Added [react-lifecycles-compat](https://github.com/reactjs/react-lifecycles-compat) as a dependency, to ensure backwards compatibility.
- Public flow interface for `CellMeasurer`. ([diogofcunha](https://github.com/diogofcunha) - [#1058](https://github.com/bvaughn/react-virtualized/pull/1058))
- Improved build by setting `sideEffects` to `false`. ([0xR](https://github.com/0xR) - [#1064](https://github.com/bvaughn/react-virtualized/pull/1064))
- 🐛 Fix flow type checks. ([RyanLiu0235](https://github.com/RyanLiu0235) - [#1066](https://github.com/bvaughn/react-virtualized/pull/1066))
- Rollup for UMD build. ([TrySound](https://github.com/TrySound) - [#994](https://github.com/bvaughn/react-virtualized/pull/994))
- Row direction support for `Masonry` ([bardiarastin](https://github.com/bardiarastin) - [#1071](https://github.com/bvaughn/react-virtualized/pull/1071))
- Add lint-staged and precommit hooks ([TrySound](https://github.com/TrySound) - [#1082](https://github.com/bvaughn/react-virtualized/pull/1082))
- Add `scrollToRow` and `scrollToColumn` support for ssr. ([microcood](https://github.com/microcood) - [#1072](https://github.com/bvaughn/react-virtualized/pull/1072))
- Add `getTotalRowsHeight` and `getTotalColumnsWidth` to `Grid`. ([nihgwu](https://github.com/nihgwu) - [#1022](https://github.com/bvaughn/react-virtualized/pull/1022))
- Allow top-right and bottom-left scrollbars in `MultiGrid` be hidden. ([RaviDasari](https://github.com/RaviDasari) - [#1040](https://github.com/bvaughn/react-virtualized/pull/1040))
- Documentation changes
  - Added `forceUpdateGrid` documentation for `MultiGrid`. ([kartikluke](https://github.com/kartikluke) - [#1079](https://github.com/bvaughn/react-virtualized/pull/1079))
  - 🐛 Fixed typo in `Grid` docs. ([r-kot](https://github.com/r-kot) - [#1092](https://github.com/bvaughn/react-virtualized/pull/1092))
  - 🐛 Fixed typo in `Collection` docs. ([skipjack](https://github.com/skipjack) - [#1050](https://github.com/bvaughn/react-virtualized/pull/1050))
  - Added dynamically measured images example for `Masonry`. ([kirill-konshin](https://github.com/kirill-konshin) - [#1081](https://github.com/bvaughn/react-virtualized/pull/1081))

##### 9.18.5

- 🐛 Revert changes > 9.18.0

<!--
##### 9.18.1
* ✨ Prevent generating cjs `prop-types` requires in esm build ([TrySound](https://github.com/TrySound) - [#950](https://github.com/bvaughn/react-virtualized/pull/950))
-->

##### 9.18.0

- ✨ Add `onScrollbarPresenceChange` prop to `MultiGrid`.

##### 9.17.3

- 🐛 Fix `Grid` server-side rendering which was broken after natural scrolling tweak in Chrome. ([TrySound](https://github.com/TrySound) - [#970](https://github.com/bvaughn/react-virtualized/pull/970))

##### 9.17.2

- ✨ Eliminate unnecessary renders for `CellMeasurer` and `Grid`. ([bvaughn](https://github.com/bvaughn) - [#969](https://github.com/bvaughn/react-virtualized/pull/969))

##### 9.17.1

- 🐛 `CellMeasurer` works properly in iframes and popup windows. ([dfdeagle47](https://github.com/dfdeagle47) - [#968](https://github.com/bvaughn/react-virtualized/pull/968))

##### 9.17.0

- More natural scrolling speeds for large lists in Chrome. ([TrySound](https://github.com/TrySound) - [#936](https://github.com/bvaughn/react-virtualized/pull/936))
- Support for multi-column sort added to `Table` component. Read more about this [here](https://github.com/bvaughn/react-virtualized/blob/master/docs/multiColumnSortTable.md). Special thanks to [CzBuCHi](https://github.com/CzBuCHi) for the initial proposal and iteration in PRs [#946](https://github.com/bvaughn/react-virtualized/pull/946) and [#957](https://github.com/bvaughn/react-virtualized/pull/957). ([bvaughn](https://github.com/bvaughn) - [#966](https://github.com/bvaughn/react-virtualized/pull/966))
- ✨ Improved `Table` performance for cases with large numbers of columns. ([gannunziata](https://github.com/gannunziata) - [#942](https://github.com/bvaughn/react-virtualized/pull/942))
- 🐛 Fixed potential initial render bug when using `CellMeasurer` with a `List`. ([OriR](https://github.com/OriR) - [#959](https://github.com/bvaughn/react-virtualized/pull/959))
- 🐛 `Masonry` component now renders at least one column to avoid an invalid, Infinity height layout issue. ([djeeg](https://github.com/djeeg) - [#961](https://github.com/bvaughn/react-virtualized/pull/961))
- 🎉 Optional `className` and `style` props added to `AutoSizer` component.

##### 9.16.1

- 🐛 Run server-side rendering tests under pure node environment and fix SSR in `WindowScroller` ([TrySound](https://github.com/TrySound) - [#953](https://github.com/bvaughn/react-virtualized/pull/953))
- 🎉 Warn on passing wrong value to registerChild in `WindowScroller` ([TrySound](https://github.com/TrySound) - [#949](https://github.com/bvaughn/react-virtualized/pull/949))
- 🐛 Fixed overrided merge `WindowScroller` scrollElement prop type ([TrySound](https://github.com/TrySound) - [#948](https://github.com/bvaughn/react-virtualized/pull/948))
- 🎉 `AutoSizer` (via the `detectElementResize` helper) now supports properly rendering into iframes and child windows ([ahutchings](https://github.com/ahutchings) - [#900](https://github.com/bvaughn/react-virtualized/pull/900))

##### 9.16.0

- 🐛 Fixed window check for SSR in `detectElementResize` ([eqyiel](https://github.com/eqyiel) - [#945](https://github.com/bvaughn/react-virtualized/pull/945))
- 🎉 Allowed custom `WindowScroller` child with `registerChild` in children function ([TrySound](https://github.com/TrySound) - [#940](https://github.com/bvaughn/react-virtualized/pull/940) and [#947](https://github.com/bvaughn/react-virtualized/pull/947))
- 🐛 Fixed `WindowScroller` scrollElement prop type ([TrySound](https://github.com/TrySound) - [#939](https://github.com/bvaughn/react-virtualized/pull/939))

##### 9.15.0

- 🎉 Detected `WindowScroller` container (not only window) resize similar to `AutoSizer` ([TrySound](https://github.com/TrySound) - [#918](https://github.com/bvaughn/react-virtualized/pull/918))
- 🐛 Prevented position breaking on `WindowScroller` container resize ([TrySound](https://github.com/TrySound) - [#920](https://github.com/bvaughn/react-virtualized/pull/920))
- 🎉 Published `AutoSizer` Flow types ([TrySound](https://github.com/TrySound) - [#934](https://github.com/bvaughn/react-virtualized/pull/934))
- 🎉 Published `WindowScroller` Flow types ([TrySound](https://github.com/TrySound) - [#915](https://github.com/bvaughn/react-virtualized/pull/915))

##### 9.14.1

- 🐛 Fixed server-side rendering bug in `WindowScroller` with undefined `window` variable.

##### 9.14.0

- 🎉 Added `serverHeight` and `serverWidth` props to `WindowScroller` for better server-side rendering support.

##### 9.13.0

- 🎉 Added `headerStyle` support for `Table` columns ([@mucsi96](https://github.com/mucsi96) - [#877](https://github.com/bvaughn/react-virtualized/pull/877))
- 🐛 Fixed `Masonry` bug that caused cells to be unnecessarily destroyed and then recreated when new cells were measured - d561d9c

##### 9.12.0

- 🎉 Added `defaultWidth` and `defaultHeight` props to `AutoSizer` to better support server-side rendering.

##### 9.11.1

- 🐛 `Masonry` component now properly pre-renders as specified by `overscanByPixels`

##### 9.11.0

- 🐛 `List` and `Grid` scroll snapping / resetting bugfix #825 by @TrySound
- 🐛 `MultiGrid` crash due to `scrollTo*` prop being `NaN` #829 by @mcordova47
- 🐛 `MultiGrid` invalid `tabIndex` prop type #818 by @kalley
- 🎉 Column default sort direction #833 by @mbseid

##### 9.10.1

- 🐛 Server-side rendering `window` reference bugfix
- 🐛 `Grid.defaultProps` bugfix

##### 9.10.0

- ✨ `Grid` uses `requestAnimationFrame` instead of `setTimeout` for improved scroll-ended debounce timing ([@guilhermefloriani](https://github.com/guilhermefloriani) - [#742](https://github.com/bvaughn/react-virtualized/pull/742))
- 🎉 `onRowRightClick` prop added to `Table` ([@damian-codilime](https://github.com/damian-codilime) - [#741](https://github.com/bvaughn/react-virtualized/pull/741))
- 🎉 `Table` component now allow children that extend `Column` ([@CptLemming](https://github.com/CptLemming) - [#748](https://github.com/bvaughn/react-virtualized/pull/748))
- 🐛 Firefox edge-case bugfix ([@ReinAkane](https://github.com/ReinAkane) - [#798](https://github.com/bvaughn/react-virtualized/pull/798))
- 🎉 `containerProps` prop added to `Grid` ([@implausible](https://github.com/implausible) - [#778](https://github.com/bvaughn/react-virtualized/pull/778))
- ✨ `Grid` accessibility improved via better aria attributes ([@smockle](https://github.com/smockle) - [#744](https://github.com/bvaughn/react-virtualized/pull/744))
- ✨ `CellMeasurererCache.clearAll` also sets row and column counts ([@tcosentino](https://github.com/tcosentino) - [#796](https://github.com/bvaughn/react-virtualized/pull/796))

##### 9.9.0

- 🎉 `InfiniteLoader` API method `resetLoadMoreRowsCache` accepts optional parameter to auto-reload most recent range of rows. ([@BamaBoy](https://github.com/BamaBoy) - [#704](https://github.com/bvaughn/react-virtualized/pull/704))
- 🎉 `MultiGrid` now supports scrolling when hovering over fixed rows or columns by way of new `enableFixedColumnScroll` and `enableFixedRowScroll` props. ([@danalloway](https://github.com/danalloway) - [#708](https://github.com/bvaughn/react-virtualized/pull/708))
- 🎉 `WindowScroller` supports new configurable `scrollingResetTimeInterval` prop (similar to `Grid`). ([@djeeg](https://github.com/djeeg) - [#728](https://github.com/bvaughn/react-virtualized/pull/728))
- 🐛 Edge-case bugfix for style caching of `Grids` locked with `ScrollSync`. ([@nathanpower](https://github.com/nathanpower) - [#727](https://github.com/bvaughn/react-virtualized/pull/727))
- ✨ New `onScrollbarPresenceChange` prop added to `Grid`.

##### 9.8.0

- 🎉 `WindowScroller` supports `scrollToIndex` prop. ([@leoasis](https://github.com/leoasis) - [#643](https://github.com/bvaughn/react-virtualized/pull/643))
- 🎉 Allow `ArrowKeyStepper` to be used as a controlled component. ([@mking-clari](https://github.com/mking-clari) - [#688](https://github.com/bvaughn/react-virtualized/pull/688))
- 🎉New `handleScroll` method on `Grid` to better support custom scrollbars. ([@5angel](https://github.com/5angel) - [#693](https://github.com/bvaughn/react-virtualized/pull/693))
- 🐛 Added edge-case guard to `WindowScroller` to prevent calling `setState` when unmounted. ([@liorbrauer](https://github.com/liorbrauer) - [#689](https://github.com/bvaughn/react-virtualized/pull/689))
- 🐛 Fixed edge-case in `Grid` where setting an initial scroll-to offset with a `height` or `width` of 0 caused the scroll-to prop to be ignored when size later changed. ([#691](https://github.com/bvaughn/react-virtualized/pull/691))

##### 9.7.6

- ✨ Better aria roles set for `Table` column cells and headers. ([@jchen527](https://github.com/jchen527) - [#681](https://github.com/bvaughn/react-virtualized/pull/681))
- 🐛 `CellMeasurer` restores `width` and `height` `style` values after measuring to avoid edge-case layout bugs. ([@marcelmokos](https://github.com/marcelmokos) - [#675](https://github.com/bvaughn/react-virtualized/pull/675))

##### 9.7.5

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

##### 9.7.4

- 🎉 Add `nonce` attribute to `AutoSizer` for better [Content Security Policy compliance](https://www.w3.org/TR/2016/REC-CSP2-20161215/#script-src-the-nonce-attribute). ([@akihikodaki](https://github.com/akihikodaki) - [#663](https://github.com/bvaughn/react-virtualized/pull/663))
- ✨ `Column` renderers now accept a `columnIndex` parameter as well. This allows multiple `Table` columns to more easily use `CellMeasurer` to compute the min row height. ([@BamaBoy](https://github.com/BamaBoy) - [#662](https://github.com/bvaughn/react-virtualized/pull/662))

##### 9.7.3

- Clear cell and style cache when controlled-scroll mode `Grid` stops scrolling. ([@leoasis](https://github.com/leoasis) - [#649](https://github.com/bvaughn/react-virtualized/pull/649))

##### 9.7.2

- ✨ Removed lingering `React.PropTypes` reference in `InfiniteLoader`.

##### 9.7.1

- ✨ Added `prop-types` dependency to avoid deprecation warnings for React 15.5+.

##### 9.7.0

- Added public animation-friendly API methods to `Grid`/`List`/`Table` for an alternative to props-based animating. ([@imadha](https://github.com/imadha) - [#641](https://github.com/bvaughn/react-virtualized/pull/641))

##### 9.6.1

- 🐛 Fixed module syntax error in vendered file.

##### 9.6.0

- 🎉 `WindowScroller` and `Grid` now support horizontal window-scrolling via new `autoWidth` property. ([@maxnowack](https://github.com/maxnowack) - [#644](https://github.com/bvaughn/react-virtualized/pull/644))
- 🐛 Fixed a Content Security Policy (CSP) issue in an upstream dependency that impacted users of the `Masonry` component. For more information see issue [#640](https://github.com/bvaughn/react-virtualized/issues/640).
- ✨ `List` and `Table` always overscan 1 row in the direction _not_ being scrolled to better support keyboard navigation (via TAB and SHIFT+TAB). For more information see [issue #625](https://github.com/bvaughn/react-virtualized/issues/625).
- ✨ `Grid` no longer alters scroll direction for one axis (eg vertical) if a scroll event occurs for another axis (eg horizontal).

##### 9.5.0

- 🎉 `Grid` supports state-override of `isScrolling` value via new `isScrolling` prop. This enables cache-while-scrolling of cells when used with `WindowScroller`. ([@olavk](https://github.com/olavk) - [#639](https://github.com/bvaughn/react-virtualized/pull/639))

##### 9.4.2

- 🐛 Small accessibility fix to `MultiGrid` so that focus outline shows through by default for main (bottom/right) `Grid`. Top and left `Grid`s are also not tab-focusable by default now since they are scroll-observers anyway.
- ✨ Added `columnWidth` parameter to `ColumnSizer` and deprecated `getColumnWidth` callback. The callback was not necessary since `columnWidth` doesn't change without a re-render and fixed number values perform better in `Grid` due to some internal optimizations anyway.

##### 9.4.1

- 🐛 Edge-case `InfiniteLoader` bug fix; prevent jumping to the first row when scrolling fast. ([@reVrost](https://github.com/reVrost) - [#632](https://github.com/bvaughn/react-virtualized/pull/632))
- 🐛 Reverted unexpected regression from [#616](https://github.com/bvaughn/react-virtualized/pull/616) until a safer fix can be found.

##### 9.4.0

- 🎉 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. ([#618](https://github.com/bvaughn/react-virtualized/pull/618))
- 🎉 `MultiGrid` supports `scrollLeft` and `scrollTop` props for controlled scrolling. ([@julianwong94](https://github.com/julianwong94) - [#624](https://github.com/bvaughn/react-virtualized/pull/624))
- 🎉 New `direction` parameter passed to `overscanIndicesGetter` with values "horizontal" or "vertical". ([@offsky](https://github.com/offsky) - [#629](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/odogono) - [#617](https://github.com/bvaughn/react-virtualized/pull/617))
- 🐛 Improved guard for edge-case scrolling issue with rubberband scrolling in iOS. ([@dtoddtarsi](https://github.com/offsky) - [#616](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).

##### 9.3.0

- 🎉 Added `resetLoadMoreRowsCache` method to `InfiniteLoader` to reset any cached data about loaded rows. This method should be called if any/all loaded data needs to be refetched (eg a filtered list where the search criteria changes). ([#612](https://github.com/bvaughn/react-virtualized/issues/612))

##### 9.2.3

- 🐛 `CellMeasurer` should work better out of the box with `MultiGrid`.
- 🐛 `CellMeasurerCache` should return correct values from `rowHeight` and `columnWidth` functions when `keyMapper` is used. ([#613](https://github.com/bvaughn/react-virtualized/pull/613))

##### 9.2.2

- 🐛 Fixed small scrollbar offset bug in `MultiGrid`. ([#609](https://github.com/bvaughn/react-virtualized/issues/609))

##### 9.2.1

- 🐛 Fixed potential scrollbar offset bug in `MultiGrid` by giving top and left `Grid`s a little extra space to scroll into. ([#535](https://github.com/bvaughn/react-virtualized/pull/535))

##### 9.2.0

- 🎉 New `Table` prop, `headerRowRenderer`. ([@kaoDev](https://github.com/kaoDev) - [#600](https://github.com/bvaughn/react-virtualized/pull/600))
- 🎉 All `Table` event handlers now receive a named `event` params ([@paulbrom](https://github.com/paulbrom) - [#605](https://github.com/bvaughn/react-virtualized/pull/605))
- 🎉 Aria roles for `Table` improved to specify `role="row"` for table rows and `role="rowgroup"` for inner `Grid`. ([@jchen527](https://github.com/jchen527) - [#607](https://github.com/bvaughn/react-virtualized/pull/607))
- 🐛 Calling `scrollToRow` for `List` or `Table` no longer potentially messes up horizontal scroll position. ([#603](https://github.com/bvaughn/react-virtualized/issues/603))

##### 9.1.0

- 🎉 Public method `setScrollIndexes` added to `ArrowKeyStepper` to enable easier overrides of current/default focused cell. - ([@alexandro81](https://github.com/alexandro81) - [#592](https://github.com/bvaughn/react-virtualized/pull/592))
- ✨ Replaced `value instanceof Function` checks with `typeof value === 'function'` for improved robustness with iframes/frames/popups. (Learn more [here](<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceof#instanceof_and_multiple_context_(e.g._frames_or_windows)>).) ([@rickychien](https://github.com/rickychien) - [#596](https://github.com/bvaughn/react-virtualized/pull/596))
- 🐛 `Grid` props `scrollToColumn` and `scrollToRow` as well as `Collection` prop `scrollToCell` now default to `-1` to avoid false positives from `null>=0` check. - ([#595](https://github.com/bvaughn/react-virtualized/issues/595))

##### 9.0.5

- 🎉 Explicitly set `width`/`height` style to "auto" before re-measuring `CellMeasurer` content so that new measurements can be taken. ([#593](https://github.com/bvaughn/react-virtualized/issues/593))
- 🐛 CellMeasurerCache now correctly recomputes cached row height and column width values when cells are cleared. ([#594](https://github.com/bvaughn/react-virtualized/issues/594))

##### 9.0.4

- 🐛 Moved flow-bin from 'dependencies' to 'devDependencies'. This was accidentally placed as a dep before.

##### 9.0.3

- 🐛 `Grid` takes scrollbar size into account when aligning cells for `scrollToColumn` or `scrollToRow` usage. ([#543](https://github.com/bvaughn/react-virtualized/issues/543))

##### 9.0.2

- 🎉 Added additional DEV-only warnings for improperly configured `CellMeasurerCache` based on user-feedback for the new API.
- 🐛 Fixed edge-case where restoring `columnCount` from 0 wouldnt properly restore previous `scrollToRow` offset (and vice versa for `rowCount` and `scrollToColumn`)
- Updated `Grid` and `Collection` to move some state-setting logic related to offsets from `componentWillUpdate` to `componentWillReceiveProps`. This change should have no externally visible impact. ([#585](https://github.com/bvaughn/react-virtualized/issues/585))

##### 9.0.1

- 🐛 Edge-case bug with scroll-to-index and cell size function property ([#565](https://github.com/bvaughn/react-virtualized/issues/565))
- 🐛 Edge-case bug with `WindowScroller` and mocked `window` object

# 9.0.0

Version 9 changes and upgrade steps are described in detail on the [version 9 pull request](https://github.com/bvaughn/react-virtualized/pull/577).

##### 8.11.4

- 🐛 Better guard against minification/uglification in `ColumnSizer` when verifying child is either a `Grid` or a `MultiGrid`. (#558)

##### 8.11.3

- Adding missing `scrollToRow` method to `List` and `Table` (as pass-thrus for `Grid.scrollToCell`).
- 🐛 Bugfixes with `MultiGrid` resize handling and caching. ([@codingbull](https://github.com/codingbull) - [#552](https://github.com/bvaughn/react-virtualized/pull/552))
- 🐛 List checks it row-style object has been frozen before modifying width; (fix for [upcoming React 16 change](https://github.com/facebook/react/commit/977357765b44af8ff0cfea327866861073095c12#commitcomment-20648713)).
- 🐛 `MultiGrid` better handles case where `rowCount === fixedRowCount`.

##### 8.11.2

- 🐛 Added `MultiGrid` method `measureAllCells`; deprecated misnamed `measureAllRows` method.

##### 8.11.1

- 🐛 Fixed regression in `WindowScroller` when browser is resized. ([@andrewbranch](https://github.com/andrewbranch) - [#548](https://github.com/bvaughn/react-virtualized/pull/548))

##### 8.11.0

- 🐛 Minor Preact compat fix to element resize detector; see [developit/preact-compat/issues/228](https://github.com/developit/preact-compat/issues/228)
- 🎉 New `scrollToCell` public method added to `Grid`.

##### 8.10.0

- 🎉 `WindowScroller` supports custom target element via a new `scrollElement` prop; defaults to `window` for backwards compatibility. ([@andrewbranch](https://github.com/andrewbranch) - [#481](https://github.com/bvaughn/react-virtualized/pull/481))
- 🐛 `MultiGrid` supports `onScroll` property. ([@Pana](https://github.com/Pana) - [#536](https://github.com/bvaughn/react-virtualized/pull/536))
- 🎉 New id-based `CellMeasurer` cell size cache, `idCellMeasurerCellSizeCache`. ([@bvaughn](https://github.com/bvaughn) - [#538](https://github.com/bvaughn/react-virtualized/pull/538))

##### 8.9.0

- New `MultiGrid` reduces the boilerplate required to configure a `Grid` with fixed columns and/or rows.
- `defaultTableRowRenderer` passes new `rowData` param to event handlers (in addition to `index`).
- 🐛 Styles are no longer cached while scrolling for compressed lists ([@nickclaw](https://github.com/nickclaw) - [#527](https://github.com/bvaughn/react-virtualized/pull/527))
- 🐛 Cell cache is reset once `InfiniteLoader` load completes ([@nickclaw](https://github.com/nickclaw) - [#528](https://github.com/bvaughn/react-virtualized/pull/528))
- Add loose-envify support for Browserify users ([@chrisvasz](https://github.com/chrisvasz) - [#519](https://github.com/bvaughn/react-virtualized/pull/519), [#523](https://github.com/bvaughn/react-virtualized/pull/523))
- `dom-helpers` dependency relaxed to support 2.x and 3.x versions ([@danez](https://github.com/danez) - [#522](https://github.com/bvaughn/react-virtualized/pull/522))
- 🐛 `Collection` no longer drops its `overflow` style in certain conditions; see facebook/react/issues/8689 for more info.

##### 8.8.1

Fixed a bug with `Grid` style-cache that caused stale cell-sizes to be used when `Grid` resized.

##### 8.8.0

`Grid` now temporarily caches inline style objects to avoid causing shallow compare to fail unnecessarily (see [PR 506](https://github.com/bvaughn/react-virtualized/pull/506)).

`AutoSizer` internal `detectElementResize` library now no longer creates duplicate `<style>` tags when unmounted and remounted (see [PR 507](https://github.com/bvaughn/react-virtualized/pull/507)).

##### 8.7.1

Reverted part of the change introduced in version 8.6.0 that changed the behavior regarding controlled/uncontrolled `scrollTop` and `scrollLeft` props and `Grid` in a way that was not backwards compatible. (See issue #490 for more.)

##### 8.7.0

Added `updatePosition` to `WindowScroller` to handle case when header items change or resize. `WindowScroller` also better handles window resize events.

##### 8.6.1

Updated `CellSizeCache` interface for the better perfomance by removing `has` methods, reducing a double hashtable lookup to a single lookup. Special thanks to @arusakov for this contribution!

##### 8.6.0

`CellMeasurer` passes `index` param (duplicate of `rowIndex`) in order to more easily integrate with `List` by default.

`Grid` now better handles a mix of controlled and uncontrolled scroll offsets. Previously changes to one offset would wipe out the other causing cells to disappear (see PR #482). This is an edge-case bug and only impacted an uncommon usecase for `Grid`. As such this change is expected to only impact only a small percetange of users.

##### 8.5.3

Changed overscan rows/cols behavior as described [here](https://github.com/bvaughn/react-virtualized/pull/478).
This change targets performance improvements only and should have no other noticeable impact.

##### 8.5.2

Added guard against potential `null` return value from `getComputedStyle` for hidden elements (see PR #465).

##### 8.5.1

`Table` header height is no longer subtracted from overall (rows) height if header is disabled.
Thanks to @Jakehp for this contribution!

##### 8.5.0

Added `disabled` property to `ArrowKeyStepper`; when `true` this component ignores keyboard events.

##### 8.4.1

`Collection` and `Grid` now set a default `direction: ltr` style property.
Neither component gracefully handles RTL layout at the moment and so it is disabled by default.
Cells within either component can be layed out RTL without any problem though.
To do so, just add an additional `direction: rtl` style property via the cell renderer.

##### 8.4.0

`ArrowKeyStepper` incrementing behavior can now be further customized via new `mode` prop.
Default behavior will remain the same (eg `mode='edges'`).
Use `mode='cells'` to prefer smaller increments.

##### 8.3.1

Fixed `scrollToAlignment` bug in `Collection` that caused cells not to render under certain conditions.
Special thanks to @coluccini for spotting and fixing this bug!

##### 8.3.0

`cellRenderer` and `rowRenderer` callbacks now accept an additional property, `isVisible`.
This property can be used to differentiate between visible and overscanned cells.
Thanks to @mbrevda for this feature!

##### 8.2.0

Added optional `id` prop to `Collection`, `Grid`, `List`, and `Table`.
Thanks to @mnquintana for the contribution!

##### 8.1.1

Wrapped component `propTypes` with `process.env.NODE_ENV !== 'production'` so they can be stripped from production builds.
Thanks to @mbrevda for the suggestion and contribution.

##### 8.1.0

Added `containerStyle` property to `Grid`.
This property allows custom styling to be applied to the inner cell-containing div.
This can be used to enable padding within the grid.
For more context see: github.com/metabase/metabase/pull/3547

Refactored the `detect-element-resize` util to export a factory function.
This allows `AutoSizer` to import it initially but defer execution until mounted.
(Executing immediately causes problems for server-side rendering context.
Using a deferred `require` causes problems for es6 bundlers, eg Rollup.)

Fixed an edge-case that occurred for slower browsers when mounting and then quickly unmounting an `AutoSizer`.
In some cases, an animation event was left attached.
This event is now specifically checked for and removed.
Special thanks to @yb (PR #436) for this bugfix contribution.

##### 8.0.13

Replaces references to `getComputedStyle` with `window.getComputedStyle` to better support Enzyme.
Thanks to @DevinClark for the contribution!

##### 8.0.12

Added "module" entry to `package.json` in order to support ES modules with the latest Webpack.
This should enable tree-shaking support ouf of the box for Webpack.
Rollup will continue to use the "jsnext:main" entry to my knowledge.

For more info see https://github.com/dherman/defense-of-dot-js/blob/master/proposal.md
Related issues: webpack/webpack#1979, bvaughn/react-virtualized/issues/427

##### 8.0.11

Fixed an invalid export for `IS_SCROLLING_TIMEOUT` inside the `WindowScroller` module.

##### 8.0.10

Changed the embedded `detect-element-resize` library `includes` call to use `indexOf` instead for better IE compatibility.

##### 8.0.9

`scrollToColumn` and `scrollToRow` offsets will always be 0 when `Grid` size is <= 0.
Technically this is an invalid size but a 0 offset is a more meaningful return value.
Previously the min/max offset check could result in a positive offset in this case (which is invalid).

##### 8.0.8

Fixes bug in resize detector that broke scrollbar functionality in Safari.

##### 8.0.7

Fixed a small `Table` alignment issue due to conflicting `padding-right` and `width: 100%` value.
Also fixed an edge-case horiztonal scrollbar that was appearing for some tables.

##### 8.0.6

Updated the embedded `detect-element-resize` library to reduce the number of reflows it triggered.
This library was forcing reflow (to measure itself) each time a scroll event occurred within its children.
This was unnecessary since it really only cared about resizes to its expand-trigger and collapse-trigger.
I have updated it to ignore scroll events triggered by other DOM elements.

As a result of this change, `AutoSizer` no longer needs to trap bubbling "scroll" events.
This opens the door to potentially using passive scroll event handlers in the future.
It also fixes a long-standing bug that prevented scrollbars from working correctly within auto-sized-content.

##### 8.0.5

`Grid` notifies `onScroll` callback if `scrollLeft` or `scrollTop` have changed in response to prop changes (including `scrollToColumn` or `scrollToRow`).

##### 8.0.4

Fixed a small regression in the `Table` component that caused a horizontal scrollbar to appear.

##### 8.0.3

Removed unnecessary `react-router` dependency.
(This was accidentally added as to `dependencies` when it should have been in `devDependencies`).

##### 8.0.2

Improved fix for regression with scaled `Grid`s that caused position offsets to be incorrect while scrolling.

##### 8.0.1

Initial attempt at fixing regression with scaled `Grid`s that caused position offsets to be incorrect while scrolling.

# 8.0.0

Version 8 changes are described in detail on the [Version 8 Roadmap](https://github.com/bvaughn/react-virtualized/issues/386).
Upgrade instructions and [jscodeshift](https://github.com/facebook/jscodeshift) mods can be found [here](docs/upgrades/Version8.md).

##### 7.24.3

ES module build (_jsnext:main_ target) updated to depend on Babel's `transform-runtime` rather than referencing global `babelHelpers`.
This should fix support within projects like `react-boilerplate`.

##### 7.24.2

`Grid` and `Collection` now set `pointer-events: ''` (instead of _auto_) after scrolling has stopped to avoid overriding parents who may have specified `pointer-events: 'none'`.

##### 7.24.1

Refactored `AutoSizer` slightly to add support for `react-lite`.

Note that if you intend to use the UMD build of `react-lite` the following lines are required before `react-virtualized` is loaded:

```js
React.addons = {
  shallowCompare(context, nextProps, nextState) {
    return React.PureComponent.prototype.shouldComponentUpdate(
      nextProps,
      nextState,
    );
  },
};
ReactDOM = React;
```

##### 7.24.0

Added `autoHeight` prop to `Collection` so that it can more easily be used with `WindowScroller`.

##### 7.23.0

`Grid` scrolling timeout for pointer events can be customized now via `scrollingResetTimeInterval` property.
This defaults to 150ms (as before).

Also addressed a couple of small bugs as well:

- Multiple `WindowScroller` instances can be used on a single page now without interfering with each other's `pointer-events` settings.
- Calling `recomputeGridSize` on `Grid` (or any of its wrapping HOCs) will clear any pending cell cache to avoid edge-case issue where a scrolling `Grid` has invalid cached cells due to a change in the underlying collection data.

##### 7.22.3

While a scroll is in progress, `Grid` focuses overscan on the direction being scrolled- doubling up the number of overscanned cells.
This reduces the amount of empty space that temporarily appears when a user is quickly scrolling.
It does not increase the overall number of cells being rendered (and so does not negatively impact performance).

##### 7.22.2

In the event that size or cell count decreases for a `Grid`, remaining cells are no longer remeasured in order to verify the current scroll offset.
Instead the most recent measurements are used.
This change should positively impact performance but should have no other affect.

##### 7.22.1

`InfiniteLoader` now better handles `FlexTable` and `VirtualScroll` children by calling `forceUpdateGrid` when defined.
This prevents rows from being stuck in a visual "loading" state until a user scrolls.

##### 7.22.0

Updated the exported `defaultCellMeasurerCellSizeCache` to support configured uniform column widths and/or row heights.
This allows greater customization and flexibility than the version released in 7.21.0.
For backwards compat `uniformSizeCellMeasurerCellSizeCache` is still exported but also points to `defaultCellMeasurerCellSizeCache`.

##### 7.21.1

Lowered the `ScalingCellSizeAndPositionManager` maximum scroll threshold from 10M to 1.5M pixels to accommodate Edge's lower-than-expected `scrollTop` maximum.

##### 7.21.0

New `cellSizeCache` added for `CellMeasurer` (`uniformSizeCellMeasurerCellSizeCache`) for cells that have a _dyanmic but uniform_ width or height.
This cache will measure only a single cell and then return its width and height for all other cells.
This allows for greater performance optimization for use cases like virtualized drop-down lists, etc.

##### 7.20.0

`Collection` now temporarily caches cells while scrolling is in progress.

##### 7.19.4

Initialize `WindowScroller` height to `window.innerHeight` if component is initially rendered in the browser.
This fixes temporary zero-height that would cause previous scroll position to be lost when a user navigates back in their history.

##### 7.19.3

Improved memoization in `InfiniteLoader` to reduce repeated calls to `loadMoreRows`.

##### 7.19.2

Edge-case bug fix for `WindowScroller` when user returning to a page (via browser back button) that has already been scrolled. Previously, `WindowScroller` failed to correctly calculate its position from the top under these conditions. Now it calculates the proper position.

##### 7.19.1

`WindowScroller` auto-restores body pointer-events when unmounted to fix edge-case bug when component was unmounted during (or _right after_) scrolling.

##### 7.19.0

`CellMeasurer` now properly uses `shallowCompare`.
It also supports a custom caching strategy for measured cell sizes (see `cellSizeCache` prop).

`Collection` supports 2 new properties: `horizontalOverscanSize` and `verticalOverscanSize`.
These properties enable the `Collection` to "overscan" its content similar to how `Grid` does.
This can reduce flicker around the edges when a user scrolls quickly.

##### 7.18.1

Fixed edge-case scroll-to-cell bug in `Grid` when row or column count increases from 0 after a scroll-offset was previous assigned.
For more info see issue #218.

##### 7.18.0

Added named exports for `defaultFlexTableCellDataGetter`, `defaultFlexTableCellRenderer`, and `defaultFlexTableHeaderRenderer` due to user request.

##### 7.17.1

Fixed a `Collection` bug that could cause the `noContentRenderer` to be shown when a collection happened to contain no visible children (due to a sparse layout).

##### 7.17.0

`CellMeasurer` exposes 2 new public methods: `resetMeasurementForColumn` and `resetMeasurementForRow`.
These methods allow a finer grain of control over the cell measurement cache.
Learn more [here](docs/CellMeasurer.md#children-function).

##### 7.16.0

Added new property `autoContainerWidth` to `Grid`.
It can be used to set the width of the inner scrollable container to 'auto'.
This is useful for single-column Grids to ensure that the column doesn't extend below a vertical scrollbar.
By default this is disabled but `VirtualScroll` and `FlexTable` both enable it on their inner `Grid`s.

##### 7.15.1

Renamed `Grid` refs within `FlexTable` and `VirtualScroll` from `_grid` to `Grid`.

This is done to better support interoperability between `FlexTable` and `react-sortable-hoc` which requires a handle on the inner `Grid`.
Technically the change is not required but it is more inline with JavaScript naming conventions (since I plan to preserve this property from an Api perspective).

##### 7.15.0

Added support for greater `FlexTable` customization via a new `rowRenderer` property.
Also exported default implementation as `defaultFlexTableRowRenderer`.
Learn more [here](docs/FlexTable.md#rowrenderer).

##### 7.14.0

`WindowScroller` component passes new named argument, `isScrolling`, to its child render function.

##### 7.13.0

Added `onRowDoubleClick` support to `FlexTable`.

##### 7.12.3

`CellMeasurer` implementation changed to use `ReactDOM.unstable_renderSubtreeIntoContainer` instead of `ReactDOMServer.renderToString` in order to support `context`.
`Grid` has been changed slightly as well to calculate its visible children just before `render` (instead of in it).
This change is not expected to have any public-facing consequences beyond supporting the `context` property for `CellMeasure`d cells.
Thanks to @jquense for this contribution!

##### 7.12.2

User-specified `Grid` and `Collection` styles can now override default style options (eg overflow, height/width).

##### 7.12.1

Fixed unexpected usage of `recomputeRowHeights` / `recomputeGridSize` where method is called with an index higher than the last measured row/cell index.
Cell measurer now properly updates the value only if the requested index is lower than the most-recently-measured cell.

##### 7.12.0

`FlexTable` `rowStyle` property can now be a on Object _or_ a function similar to the `rowClassName` property.

##### 7.11.8

Fixed edge-case bug previously possible when combining the `scrollToAlignment` property with `scrollToRow` or `scrollToColumn` at the end of a collection.
Under certain circumstances this caused the grid to scroll too far; that has now been resolved.
Center-alignment logic has also been improved to better align scrolled cells.

##### 7.11.7

Removed `xmlns` property from `<svg>` tag in `SortEditor` to avoid React 15.2 property warning.

##### 7.11.6

Fixed `CellMeasurer` throws "Only a ReactOwner can have refs" error.

##### 7.11.5

Small change to inline styles for `Grid` to work around obscure bug where an initial scroll offset prop is specified before external CSS stylesheets have loaded.

##### 7.11.4

Added more pass-thru props from `VirtualScroll` to `Grid` to ensure that when `VirtualScroll` re-renders (due to changed props) so does its inner `Grid`.
Both components are still "pure" (from a shallow comparison perspective).

##### 7.11.3

Updated `Grid` and `VirtualScroll` so that the width of rows in a `VirtualScroll` does not stretch beneath a scrollbar (if one is visible).

##### 7.11.2

Added more pass-thru props from `FlexTable` to `Grid` to ensure that when `FlexTable` re-renders (due to changed props) so does its inner `Grid`.
Both components are still "pure" (from a shallow comparison perspective).
This just avoids the unintuitive use-case where some table properties (eg headers) may change while others (eg rows) do not.

##### 7.11.1

Updated UMD build to remove `react-addons-shallow-compare` from the build.
UMD users should use `react-with-addons.min.js` (should have already been using it in fact) instead of `react.min.js`.
Thanks to @ducky427 for reporting this oversight and updating the Webpack config!

##### 7.11.0

The `recomputeRowHeights` method of `FlexTable` and `VirtualScroll` accepts an optional index (defaults to 0) after which to recompute sizes.
The `recomputeGridSize` method of `Grid` accepts named `columnIndex` and `rowIndex` parameters tha function similarly.

This allows for a finer grained optimization when invalidating a collection.
If, for example, a specific row in a table has resized- it is now possible to recompute the positions of only the rows occurring after this row.
Because of the way react-virtualized just-in-time measures rows, this will also avoid re-measuring any but the visible rows at the time of the change.

If several items in the collection have changed and you are unsure of which, it is safest to recompute all columns/rows.
This remains the default behavior unless override indices are specified as parameters.

##### 7.10.0

New `gridClassName` and `gridStyle` pass-through properties added to `FlexTable`.

##### 7.9.1

Fixed edge-case bug in `FlexTable` that caused the inner `Grid` not to update when there was a vertical scrollbar.
This in turn caused headers to be misaligned.

##### 7.9.0

Added `forceUpdateGrid` method to `FlexTable` and `VirtualScroll` to enable the inner `Grid` to be udpated without resorting to recomputing cached row heights.

##### 7.8.3

`Grid` no longer checks `scrollTop` when `autoHeight=true` in order to avoid unnecessary reflows/repaints.
This change only impacts `WindowScroller` use cases.

##### 7.8.2

Fixed edge-case problem with `FlexTable` where changes to the number of children (`FlexColumn`s) didn't update the inner `Grid`.

##### 7.8.1

Reverted default `tabIndex = null` value for `Grid` (introduced in 7.8.0) due to a negative accessibility impact.
A focused `Grid` paints significantly more while scrolling which impacts FPS.
Unfortunately it is a necessity to support keyboard scrolling properly and so it's the default once more.
This can be explicitly disabled by setting `tabIndex = null` if you want.

##### 7.8.0

Scrolling performance improvements for `FlexTable` and to a lesser extent `Grid`.

The primary change to `Grid` is that `tabIndex` will be set to `null` by default instead of `0`.
This improves repainting performance when a `Grid` is being scrolled.

This release removes the `FlexTable__truncatedColumnText` wrapper column and collapses its styles into `FlexTable__rowColumn`.
If you were depending on the former class you will want to update your dependencies.
I was on the fence about this in terms of compatibility, but I feel this is more of an internal implementation detail than it is public-facing API.

This release also changes the primary `FlexTable` cell from a flex container to a block.
This means that if you were right-aligning text within a column you will need to change from `align-items: flex-end` to `text-align: right`.

##### 7.7.1

Export the `defaultCellRangeRenderer` used by `Grid` in order to enable easier composition.

##### 7.7.0

Added configurable `tabIndex` property to `Grid`, `FlexTable`, and `VirtualScroll`.
Default value remains 0 but can now be overridden.

##### 7.6.0

New property added to `Grid`, `FlexTable`, and `VirtualScroll` to enable custom CSS class name and style to be added to the outer cell decorator.
This can be used to greater customize styles as well as to better implement custom (non-flexbox) styles for IE9.
Thanks to nicholasrq@ for this contribution!

##### 7.5.0

New `WindowScroller` HOC added to enable a `FlexTable` or `VirtualScroll` component to be scrolled based on the window's scroll positions.
This can be used to create layouts similar to Facebook or Twitter news feeds.
Big thanks to minheq@ for this contribution!

##### 7.4.0

Added mouse-over and mouse-out row-level events to `FlexTable`. Thanks to @queeto for the PR!

##### 7.3.3

Fixed unintention regression in IE10 support introduced with `ScalingCellSizeAndPositionManager` extending `CellSizeAndPositionManager`.
Inheritance has been replaced with composition for this case in order to simplify IE10 compatibility.
Notice that Babel `babel-polyfill` is still required in order to support other ES5 features.

##### 7.3.2

Edge-case bug fix for `CellMeasurer` in the event that its `getRowHe