[docs] Update changelog

Author: IjzerenHein

CHANGELOG.md

@@ -1,5 +1,9 @@
 # [2.1.0](https://github.com/IjzerenHein/react-navigation-shared-element/compare/v2.0.2...v2.1.0) (2020-02-22)
 
+### Bug Fixes
+
+- Fix no transition when navigators are nested inside `createSharedElementStackNavigator`.
+- Fix exception when nesting a Navigator inside `createSharedElementStackNavigator`.
 
 
 ## [2.0.2](https://github.com/IjzerenHein/react-navigation-shared-element/compare/v2.0.1...v2.0.2) (2020-02-13)