Added version changes to CHANGELOG

Author: valentijnnieman

CHANGELOG.md

@@ -2,6 +2,12 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.27.2]
+### Fixed
+- `Tabs.children` can now be undefined, so you can update them dynamically. [#265](https://github.com/plotly/dash-core-components/issues/265)
+- `Tabs` Callback-less version no longer has the 2nd tab selected by default [#262](https://github.com/plotly/dash-core-components/issues/262)
+- Fixes bug with nested `Tabs` [#273](https://github.com/plotly/dash-core-components/issues/273) and [#272](https://github.com/plotly/dash-core-components/issues/272)
+
 ## [0.27.1]
 ### Fixed
 - `ConfirmDialogProvider` can now be used without a callback. [#241](https://github.com/plotly/dash-core-components/pull/241)