Upgrade changelo

Author: dunglas

CHANGELOG.md

@@ -24,6 +24,9 @@
 * Improve the performance of the filters subsystem by using a PSR-11 service locator and deprecate the `FilterCollection` class
 * Add compatibility with Symfony Flex and Symfony 4
 * Allow the Symfony Dependency Injection component to autoconfigure data providers and query extensions
+* Allow to use service for dynamic validation groups
+* Allow using PHP constants in YAML resources files
+* Upgrade to the latest version of the Hydra spec
 
 ## 2.0.10