* 4.4.1 (2019-12-01)

* bug #34732 [DependencyInjection][Xml] Fix the attribute 'tag' is not allowed in 'bind' tag (tienvx)

* bug #34729 [DI] auto-register singly implemented interfaces by default (nicolas-grekas)

* bug #34728 [DI] fix overriding existing services with aliases for singly-implemented interfaces (nicolas-grekas)

* bug #34649 more robust initialization from request (dbu)

* bug #34715 [TwigBundle] remove service when base class is missing (xabbuh)

* bug #34600 [DoctrineBridge] do not depend on the QueryBuilder from the ORM (xabbuh)

* bug #34627 [Security/Http] call auth listeners/guards eagerly when they "support" the request (nicolas-grekas)

* bug #34671 [Security] Fix clearing remember-me cookie after deauthentication (chalasr)

* bug #34711 Fix the translation commands when a template contains a syntax error (fabpot)

* bug #34032 [Mime] Fixing multidimensional array structure with FormDataPart (jvahldick)

* bug #34560 [Config][ReflectionClassResource] Handle parameters with undefined constant as their default values (fancyweb)

* bug #34695 [Config] don't break on virtual stack frames in ClassExistenceResource (nicolas-grekas)

* bug #34716 [DependencyInjection] fix dumping number-like string parameters (xabbuh)

* bug #34558 [Console] Fix autocomplete multibyte input support (fancyweb)

* bug #34130 [Console] Fix commands description with numeric namespaces (fancyweb)

* bug #34562 [DI] Skip unknown method calls for factories in check types pass (fancyweb)

* bug #34677 [EventDispatcher] Better error reporting when arguments to dispatch() are swapped (rimas-kudelis)

* bug #33573 [TwigBridge] Add row_attr to all form themes (fancyweb)

* bug #34019 [Serializer] CsvEncoder::NO_HEADERS_KEY ignored when used in constructor (Dario Savella)

* bug #34083 [Form] Keep preferred_choices order for choice groups (vilius-g)

* bug #34091 [Debug] work around failing chdir() on Darwin (mary2501)

* bug #34305 [PhpUnitBridge] Read configuration CLI directive (ro0NL)

* bug #34490 [Serializer] Fix MetadataAwareNameConverter usage with string group (antograssiot)

* bug #34632 [Console] Fix trying to access array offset on value of type int (Tavafi)

* bug #34669 [HttpClient] turn exception into log when the request has no content-type (nicolas-grekas)

* bug #34662 [HttpKernel] Support typehint to deprecated FlattenException in controller (andrew-demb)

* bug #34619 Restores preview mode support for Html and Serializer error renderers (yceruto)

* bug #34636 [VarDumper] notice on potential undefined index (sylvainmetayer)

* bug #34668 [Cache] Make sure we get the correct number of values from redis::mget() (thePanz)

* bug #34621 [Routing] Continue supporting single colon in object route loaders (fancyweb)

* bug #34554 [HttpClient] Fix early cleanup of pushed HTTP/2 responses (lyrixx)

* bug #34607 [HttpKernel] Ability to define multiple kernel.reset tags (rmikalkenas)

* bug #34599 [Mailer][Mailchimp Bridge] Throwing undefined index _id when setting message id (monteiro)

* bug #34569 [Workflow] Apply the same logic of precedence between the apply() and the buildTransitionBlockerList() method (lyrixx)

* bug #34580 [HttpKernel] Don't cache "not-fresh" state (nicolas-grekas)

* bug #34577 [FrameworkBundle][Cache] Don't deep-merge cache pools configuration (alxndrbauer)

* bug #34515 [DependencyInjection] definitions are valid objects (xabbuh)

* bug #34536 [SecurityBundle] Don't require a user provider for the anonymous listener (chalasr)

* bug #34533 [Monolog Bridge] Fixed accessing static property as non static. (Sander-Toonen)

* bug #34502 [FrameworkBundle][ContainerLint] Keep "removing" compiler passes (fancyweb)

* bug #34552 [Dotenv] don't fail when referenced env var does not exist (xabbuh)

* bug #34546 [Serializer] Add DateTimeZoneNormalizer into Dependency Injection (jewome62)

* bug #34547 [Messenger] Error when specified default bus is not among the configured (vudaltsov)

* bug #34513 [Validator] remove return type declaration from __sleep() (xabbuh)

* bug #34551 [Security] SwitchUser is broken when the User Provider always returns a valid user (tucksaun)

* bug #34385 Avoid empty "If-Modified-Since" header in validation request (mpdude)

* bug #34458 [Validator] ConstraintValidatorTestCase: add missing return value to mocked validate method calls (ogizanagi)

* bug #34516 [HttpKernel] drop return type declaration (xabbuh)

* bug #34474 [Messenger] Ignore stamps in in-memory transport (tienvx)