* 4.3:
[Cache] replace getNsSeparator by NS_SEPARATOR on AbstractTrait
[Cache] fix versioning with SimpleCacheAdapter
[Messenger] fix AMQP delay queue to be per exchange
Fix expired lock not cleaned
[HttpClient] throw DecodingExceptionInterface when toArray() fails because of content-type error
[HttpFoundation] Fix SA/phpdoc JsonResponse
[DI] Show the right class autowired when providing a non-existing class in constructor
SimpleCacheAdapter fails to cache any item if a namespace is used
validate composite constraints in all groups
[Serializer] Handle true and false appropriately in CSV encoder
[Messenger] improve logs
[Messenger] fix delay delivery for non-fanout exchanges
Parameterize Mailgun's region
Fix binary operation `+`, `-` or `*` on string
[VarDumper] fix dumping objects that implement __debugInfo()
[HttpClient] Don't use CurlHttpClient on Windows when curl.cainfo is not set
Add statement to fileLink to ignore href code when no fileLink.
[Routing] fix absolute url generation when scheme is not known
* 4.3:
fixed CS
fixed CS
fixed CS
Do not log or call the proxy function when the locale is the same
Added missing required dependencies on psr/cache and psr/container in symfony/cache-contracts and symfony/service-contracts respectively.
[HttpClient] fix closing debug stream prematurely
[Mailer] made code more robust
Restore compatibility with php 5.5
fixed sender/recipients in SMTP Envelope
collect called listeners information only once
[HttpKernel] Remove TestEventDispatcher.
