To get the diff for a specific change, go tohttps://github.com/symfony/symfony/commit/XXX where XXX is the change hash

To get the diff between two versions, go tohttps://github.com/symfony/symfony/compare/v2.8.0...v2.8.1

* 2.8.20 (2017-05-01)

* bug#22550 Allow Upper Case property names in ObjectNormalizer (insekticid)

* bug#22528[Asset] Starting slash should indicate no basePath wanted (weaverryan)

* bug#22541[EventDispatcher] fix: unwrap listeners for correct info (dmaicher)

* bug#22526[Asset] Preventing the base path or absolute URL from being prefixed incorrectly (weaverryan)

* bug#22523[WebProfilerBundle] Fixed the flickering when loading complex profiler panels (javiereguiluz)

* bug#22435[Console] Fix dispatching throwables from ConsoleEvents::COMMAND (nicolas-grekas)

* bug#22478[Serializer] XmlEncoder: fix negative int and large numbers handling (dunglas)

* bug#22424[Debug] Set exit status to 255 on error (nicolas-grekas)

* bug#22426[PropertyInfo] Prevent returning int values in some cases (dunglas)

* bug#22399 Prevent double registrations related to tag priorities (nicolas-grekas)

* bug#22396 Prevent double registrations related to tag priorities (nicolas-grekas)

* bug#22352[HttpFoundation] Add`use_strict_mode` in validOptions for session (sstok)

* bug#22351[Yaml] don't keep internal state between parser runs (xabbuh)

* bug#22307[Debug] Fix php notice (enumag)

* bug#22311[DI] Fix second auto-registration (nicolas-grekas)

* bug#22109[Validator] check for empty host when calling checkdnsrr() (apetitpa)

* bug#22280[DI] Fix the xml schema (GuilhemN)

* bug#22282[DI] Prevent AutowirePass from triggering irrelevant deprecations (chalasr)

* bug#22255[Translation] avoid creating cache files for fallback locales. (aitboudad)

* bug#22292 Fixes#22264 - add support for Chrome headless (redthor)

* 2.8.19 (2017-04-05)

* bug#22265 Allow Upper Case property names (insekticid)

protected$startTime;

protected$loadClassCache;

constVERSION ='2.8.20-DEV';

constVERSION ='2.8.20';

constVERSION_ID =20820;

constMAJOR_VERSION =2;

constMINOR_VERSION =8;

constRELEASE_VERSION =20;

constEXTRA_VERSION ='DEV';

constEXTRA_VERSION ='';

constEND_OF_MAINTENANCE ='11/2018';

constEND_OF_LIFE ='11/2019';