Merge branch '4.4'

* 4.4:
  [Mailer] simplified the way TLS/SSL/StartTls work
  [VarDumper] Add test dump image
  Allow exchange type headers binding
  Add types to private and final methods.
  [Messenger] InMemoryTransport handle acknowledged and rejected messages
  [Intl] Validate region preferred alpha code mapping
  Added ErrorHandler::call() method utility to turns any PHP warnings into `\ErrorException`
  [Intl] Full alpha3 language support
  [Monolog] Added ElasticsearchLogstashHandler

Author: fabpot

Authorization/AccessDecisionManager.php

@@ -66,7 +66,7 @@ public function decide(TokenInterface $token, array $attributes, $object = null)
      * If all voters abstained from voting, the decision will be based on the
      * allowIfAllAbstainDecisions property value (defaults to false).
      */
-    private function decideAffirmative(TokenInterface $token, array $attributes, $object = null)
+    private function decideAffirmative(TokenInterface $token, array $attributes, $object = null): bool
     {
         $deny = 0;
         foreach ($this->voters as $voter) {
@@ -106,7 +106,7 @@ private function decideAffirmative(TokenInterface $token, array $attributes, $ob
      * If all voters abstained from voting, the decision will be based on the
      * allowIfAllAbstainDecisions property value (defaults to false).
      */
-    private function decideConsensus(TokenInterface $token, array $attributes, $object = null)
+    private function decideConsensus(TokenInterface $token, array $attributes, $object = null): bool
     {
         $grant = 0;
         $deny = 0;
@@ -147,7 +147,7 @@ private function decideConsensus(TokenInterface $token, array $attributes, $obje
      * If all voters abstained from voting, the decision will be based on the
      * allowIfAllAbstainDecisions property value (defaults to false).
      */
-    private function decideUnanimous(TokenInterface $token, array $attributes, $object = null)
+    private function decideUnanimous(TokenInterface $token, array $attributes, $object = null): bool
     {
         $grant = 0;
         foreach ($this->voters as $voter) {