* 4.4.20 (2021-03-04)

* bug #40318 [Translation] deal with indented heredoc/nowdoc tokens (xabbuh)

* bug #40350 [DependencyInjection] fix parsing calls of methods named "method" (xabbuh)

* bug #40316 [Serializer] zero parts can be omitted in date interval input (xabbuh)

* bug #40239 MockResponse total_time should not be simulated when provided (Pierrick VIGNAND)

* bug #40299 [Cache] Add server-commands support for Predis Replication Environments (DemigodCode)

* bug #40231 [HttpKernel] Configure `session.cookie_secure` earlier (tamcy)

* bug #40283 [Translation] Make `name` attribute optional in xliff2 (MarieMinasyan)

* bug #39599 [Cache] Fix Redis TLS scheme `rediss` for Redis connection (misaert)

* bug #40244 [Routing] fix conflict with param named class in attribute (nlhommet)

* bug #40273 [Cache] fix setting items' metadata on commit() (nicolas-grekas)

* bug #40258 [Form] Ignoring invalid forms from delete_empty behavior in CollectionType (yceruto)

* bug #40162 [Intl] fix Locale::getFallback() throwing exception on long $locale (AmirHo3ein13)

* bug #40208 [PropertyInfo] fix resolving self to name of the analyzed class (xabbuh)

* bug #40209 [WebLink] Escape double quotes in attributes values (fancyweb)

* bug #40192 [Console] fix QuestionHelper::getHiddenResponse() not working with space in project directory name (Yendric)

* bug #40175 [PropertyInfo]  use the right context for properties defined in traits (xabbuh)

* bug #40172 [Translation] Allow using dashes in locale when linting Xliff files (localheinz)

* bug #40187 [Console] Fix PHP 8.1 null error for preg_match flag (kylekatarnls)

* bug #39659 [Form] keep valid submitted choices when additional choices are submitted (xabbuh)

* bug #40188 [HttpFoundation] Fix PHP 8.1 null values (kylekatarnls)

* bug #40167 [DependencyInjection] Definition::removeMethodCall should remove all matching calls (ruudk)

* bug #40160 [PropertyInfo] fix extracting mixed type-hinted property types (xabbuh)

* bug #40040 [Finder] Use a lazyIterator to close files descriptors when no longer used (jderusse)

* bug #40135 [FrameworkBundle] Fix freshness checks with boolean parameters on routes (HypeMC)

* bug #40138 [FrameworkBundle] fix registering "annotations.cache" on the "container.hot_path" (nicolas-grekas)

* bug #40116 [FrameworkBundle][Translator] scan directories for translations sequentially (xabbuh)

* bug #40104 [HttpKernel] [Kernel] Silence failed deprecations logs writes (fancyweb)

* bug #40098 [DependencyInjection] fix tracking of changes to vendor/ dirs (nicolas-grekas)

* bug #39980 [Mailer][Mime] Update inline part names with newly generated ContentId (ddegentesh)

* bug #40043 [HttpFoundation] Setting `REQUEST_TIME_FLOAT` when constructing a Request object (ctasada)

* bug #40050 [FrameworkBundle][Translator] Fixed updating catalogue metadata from Intl domain (yceruto)

* bug #40089 [SecurityBundle] role_names variable instead of roles (wickedOne)

* bug #40042 [Doctrine] Restore priority for EventSubscribers (jderusse)

* bug #40066 [ErrorHandler] fix parsing return types in DebugClassLoader (nicolas-grekas)

* bug #40065 [ErrorHandler] fix handling messages with null bytes from anonymous classes (nicolas-grekas)

* bug #40067 [PhpUnitBridge] fix reporting deprecations when they come from DebugClassLoader (nicolas-grekas)

* bug #40060 fix validator when we have false returned by the current element of the iterator (FabienSalles)

* bug #40062 [Mime] Fix case-sensitive handling of header names (piku235)

* bug #40023 [Finder]  use proper keys to not override appended files (xabbuh)

* bug #40019 [ErrorHandler] Fix strpos error when trying to call a method without a name (Deuchnord)

* bug #40004 [Serializer] Prevent access to private properties without getters (julienfalque)