Added to CHANGELOG

Author: valentijnnieman

CHANGELOG.md

@@ -5,9 +5,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ## [0.28.2] - 2018-09-07
 ### Changed
 - The `Interval` component's `max_interval` prop can now be used to stop/restart the interval. Fixes [#266](https://github.com/plotly/dash-core-components/issues/266)
+- The `Graph` component's `id` is now not required to be set. 
 ### Fixed
 - Fixed bug where Graph would resize randomly when rerendered, for example in a dcc.Tabs component.
-- 
 
 ## [0.28.2] - 2018-09-06
 ### Fixed