* 4.4.19 (2021-01-27)

* bug #38900 [Serializer] Exclude non-initialized properties accessed with getters (BoShurik)

* bug #39887 [Translator] fix handling plural for floating numbers (kylekatarnls)

* bug #39967 [Messenger] fix redis messenger options with dsn (Kleinast)

* bug #39970 [Messenger] Fix transporting non-UTF8 payloads by encoding them using base 64 (nicolas-grekas)

* bug #39909 [PhpUnitBridge] Allow relative path to composer cache (jderusse)

* bug #39944 [HttpKernel] Configure the ErrorHandler even when it is overriden (nicolas-grekas)

* bug #39932 [Console] [Command] Fix Closure code binding when it is a static anonymous function (fancyweb)

* bug #39880 [DoctrineBridge] Add username to UserNameNotFoundException (qurben)

* bug #39633 [HttpFoundation] Drop int return type from parseFilesize() (LukeTowers)

* bug #39889 [HttpClient] Add check for constant in Curl client (pierredup)

* bug #39886 [HttpFoundation] Revert #38614 and add assert to avoid regressions (BafS)

* bug #39858 Fix problem when SYMFONY_PHPUNIT_VERSION is empty string value (alexander-schranz)

* bug #39861 [DependencyInjection] Skip deprecated definitions in CheckTypeDeclarationsPass (chalasr)

* bug #39862 [Security] Replace message data in JSON security error response (wouterj)

* bug #39667 [DoctrineBridge] Take into account that indexBy="person_id" could be a db column name, for a referenced entity (victormacko)

* bug #39799 [DoctrineBridge] Fix circular loop with EntityManager (jderusse)

* bug #39821 [DependencyInjection] Don't trigger notice for deprecated aliases pointing to deprecated definitions (chalasr)

* bug #39816 [HttpFoundation] use atomic writes in MockFileSessionStorage (nicolas-grekas)

* bug #39735 [Serializer] Rename normalize param (VincentLanglet)

* bug #39797 Dont allow unserializing classes with a destructor (jderusse)

* bug #39743 [Mailer] Fix missing BCC recipients in SES bridge (jderusse)

* bug #39764 [Config]  fix handling float-like key attribute values (xabbuh)

* bug #39787 [Yaml] a colon followed by spaces exclusively separates mapping keys and values (xabbuh)

* bug #39788 [Cache] fix possible collision when writing tmp file in filesystem adapter (nicolas-grekas)

* bug #39794 Dont allow unserializing classes with a destructor - 4.4 (jderusse)

* bug #39747 [DependencyInjection] Support PHP 8 builtin types in CheckTypeDeclarationsPass (derrabus)

* bug #39738 [VarDumper] fix mutating $GLOBALS while cloning it (nicolas-grekas)

* bug #39746 [DependencyInjection] Fix InvalidParameterTypeException for function parameters (derrabus)

* bug #39681 [HttpFoundation] parse cookie values containing the equal sign (xabbuh)

* bug #39716 [DependencyInjection] do not break when loading schemas from network paths on Windows (xabbuh)

* bug #39703 [Finder] apply the sort callback on the whole search result (xabbuh)

* bug #39717 [TwigBridge] Remove full head content in HTML to text converter (pupaxxo)

* bug #39708 [WebProfilerBundle] take query and request parameters into account when matching routes (xabbuh)

* bug #39683 [Yaml] keep trailing newlines when dumping multi-line strings (xabbuh)

* bug #39670 [Form] disable error bubbling by default when inherit_data is configured (xabbuh)

* bug #39686 [Lock] Fix config merging in lock (jderusse)

* bug #39668 [Yaml] do not dump extra trailing newlines for multiline blocks (xabbuh)

* bug #39653 [Form] fix passing null $pattern to IntlDateFormatter (nicolas-grekas)

* bug #39598 [Messenger] Fix stopwach usage if it has been reset (lyrixx)

* bug #39631 [VarDumper] Fix display of nullable union return types (derrabus)

* bug #39629 [VarDumper] fixed displaying "mixed" as "?mixed" (nicolas-grekas)

* bug #39597 [Mailer] Handle failure when sending DATA (jderusse)

* bug #39610 [ProxyManagerBridge] fix PHP notice, switch to "friendsofphp/proxy-manager-lts" (nicolas-grekas)