Updated changelog for v0.3.0

Author: Clauderic Demers

CHANGELOG.md

@@ -1,5 +1,7 @@
 Changelog
 ------------
+### 0.3.0
+Added grid support for elements of equal widths / heights [#4](https://github.com/clauderic/react-sortable-hoc/issues/4) [#86](https://github.com/clauderic/react-sortable-hoc/pull/86). Huge shout-out to [@richmeij](https://github.com/richmeij) for making this happen!
 
 ### 0.2.0
 Add a `getHelperDimensions` prop to control SortableHelper size [#83](https://github.com/clauderic/react-sortable-hoc/issues/83). Thanks [@nervetattoo](https://github.com/nervetattoo)!