* 3.4:
[DI] use assertStringEqualsFile when possible
[VarDumper] Adapt to php 7.2 changes
[DI] Fix using private services in expressions
[Form][TwigBridge] Don't render _method in form_rest() for a child form
[Form] Static call TimezoneType::getTimezones
Removed references for non existent validator constraints
Suggest using quotes instead of Yaml::PARSE_KEYS_AS_STRINGS
[DI] Fix test
[Cache] Handle unserialization failures for Memcached
Remove unused prop + added @deprecated
Remove unused mocks/vars
feature #22317 [Console] Make SymfonyQuestionHelper::ask optional by default (ro0NL)
[DoctrineBridge][PropertyInfo] Added support for Doctrine Embeddables
[Validator] Fix IbanValidator for ukrainian IBANs
Router: allow HEAD method to be defined first
[WebProfilerBundle] Display trace and context in the logger profiler
Fixing a bug where if a core class was autowired, autowiring tried to autowire optional args as if they were required
