This PR was squashed before being merged into the master branch (closessymfony#17).Discussion----------Changed the README a bit* A bit personally, but an ordered list using numbers seem to indicate a list of steps, while an ordered list using characters indicates different options;* The demo command was added to the symfony installer (and is available if you download it from symfony.com);* Some code blocks used the bash highlighting, while others didn't;* Link to symfony's installing composer guide, as it explains how to install globally (composer still doesn't document this on its download page).Btw, why does the guide use `server:run` and not `server:start`? (maybe to be compatible with Windows users?)Commits-------c52da0f Changed the README a bit

Added ZF2014-02

# Das ist die erste Commit-Beschreibung:[Notifier] add support for gatewayapi-notifier# Die Commit-Beschreibungsymfony#2 wird ausgelassen:# Make GatewayAPITransportFactory final# Die Commit-Beschreibungsymfony#3 wird ausgelassen:# Fix typo in gatewaypi# Die Commit-Beschreibungsymfony#4 wird ausgelassen:# Fix typo# Die Commit-Beschreibungsymfony#5 wird ausgelassen:# Update README.md# Die Commit-Beschreibungsymfony#6 wird ausgelassen:# Rename GatewayAPI -> GatewayApi# Die Commit-Beschreibungsymfony#7 wird ausgelassen:# Add GatewayApiTransportFactory tests# Die Commit-Beschreibungsymfony#8 wird ausgelassen:# Add GatewayApiTransportTest testSend# Die Commit-Beschreibungsymfony#9 wird ausgelassen:# Add GatewayApiTransportTest testSupportsSmsMessage# Die Commit-Beschreibungsymfony#10 wird ausgelassen:# Add GatewayApiTransportTest testNotSupportsChatMessage# Die Commit-Beschreibungsymfony#11 wird ausgelassen:# Lint code# Die Commit-Beschreibungsymfony#12 wird ausgelassen:# Fix name and email in composer.json## Co-authored-by: Tobias Nyholm <tobias.nyholm@gmail.com># Die Commit-Beschreibungsymfony#13 wird ausgelassen:# Remove extra from composer.json# Die Commit-Beschreibungsymfony#14 wird ausgelassen:# Update version tag in GatewayApiTransport# Die Commit-Beschreibungsymfony#15 wird ausgelassen:# Add /.gitattributes export-ignore in .gitattributes# Die Commit-Beschreibungsymfony#16 wird ausgelassen:# Update UnsupportedSchemeException# Die Commit-Beschreibungsymfony#17 wird ausgelassen:# Add required space in phpdoc# Die Commit-Beschreibungsymfony#18 wird ausgelassen:# Update GatewayApiTransportFactory.php## Update version tag in GatewayApiTransportFactory# Die Commit-Beschreibungsymfony#19 wird ausgelassen:# [Notifier] add support for gatewayapi-notifier# Die Commit-Beschreibungsymfony#20 wird ausgelassen:# Make GatewayAPITransportFactory final# Die Commit-Beschreibungsymfony#21 wird ausgelassen:# Make GatewayAPITransportFactory final# Die Commit-Beschreibungsymfony#22 wird ausgelassen:# Fix typo in gatewaypi# Die Commit-Beschreibungsymfony#23 wird ausgelassen:# Fix typo# Die Commit-Beschreibungsymfony#24 wird ausgelassen:# Update README.md

…afimArts)This PR was squashed before being merged into the 6.2 branch.Discussion----------[VarDumper] Add `FFI\CData` and `FFI\CType` types| Q             | A| ------------- | ---| Branch?       | 6.2| Bug fix?      | no| New feature?  | yes| Deprecations? | no| Tickets       | -| License       | MIT| Doc PR        | -Added support of FFI:```php$ffi = \FFI::cdef(<<<'CPP'    typedef struct { int x; int y; } Point;    typedef struct Example {        uint8_t array[32];        long longVal;        __extension__ union {            __extension__ struct { short shortVal; };            struct { Point point; float e; };        };        bool boolValue;        int (*func)(struct __sub *h);    } Example;CPP);$struct = $ffi->new('Example');$struct->func = (static fn (object $ptr) => 42);dump($struct);```**Before**```FFI\CData {#2}```**After**```FFI\CData<struct Example> size 64 align 8 {#2  +array: FFI\CData<uint8_t[32]> size 32 align 1 {#18}  +int32_t longVal: 0  +int16_t shortVal: 0  +point: FFI\CData<struct <anonymous>> size 8 align 4 {#17    +int32_t x: 0    +int32_t y: 0  }  +float e: 0.0  +bool boolValue: false  +func: [cdecl] callable(struct __sub*): int32_t {#20    returnType: FFI\CType<int32_t> size 4 align 4 {#25}  }}```P.S. I apologize for the multiple force pushes, errors in tests and codestyle have been fixed.## Review And TODOs- Pointers  - [x] Pointer to scalar tests.  - [x] Pointer to struct tests.  - [x] "Special" pointer to `char*` tests (with `\0` and without `\0`).- Possible Errors  - [x] Do not dump union fields with pointer references (possible SIGSEGV).Commits-------1c7dc52 [VarDumper] Add `FFI\CData` and `FFI\CType` types

…lishing a message. (jwage)This PR was squashed before being merged into the 6.4 branch.Discussion----------[Messenger] [Amqp] Handle AMQPConnectionException when publishing a message.| Q             | A| ------------- | ---| Branch?       | 6.4| Bug fix?      | yes| New feature?  | no| Deprecations? | no| Issues        |Fix#36538Fix#48241| License       | MITIf you have a message handler that dispatches messages to another queue, you can encounter `AMQPConnectionException` with the message "Library error: a SSL error occurred" or "a socket error occurred"  depending on if you are using tls or not or if you are running behind a load balancer or not.You can manually reproduce this issue by dispatching a message where the handler then dispatches another message to a different queue, then go to rabbitmq admin and close the connection manually, then dispatch another message and when the message handler goes to dispatch the other message, you will get this exception:```a socket error occurred#0 /vagrant/vendor/symfony/amqp-messenger/Transport/AmqpTransport.php(60): Symfony\Component\Messenger\Bridge\Amqp\Transport\AmqpSender->send()#1 /vagrant/vendor/symfony/messenger/Middleware/SendMessageMiddleware.php(62): Symfony\Component\Messenger\Bridge\Amqp\Transport\AmqpTransport->send()#2 /vagrant/vendor/symfony/messenger/Middleware/FailedMessageProcessingMiddleware.php(34): Symfony\Component\Messenger\Middleware\SendMessageMiddleware->handle()#3 /vagrant/vendor/symfony/messenger/Middleware/DispatchAfterCurrentBusMiddleware.php(61): Symfony\Component\Messenger\Middleware\FailedMessageProcessingMiddleware->handle()#4 /vagrant/vendor/symfony/messenger/Middleware/RejectRedeliveredMessageMiddleware.php(41): Symfony\Component\Messenger\Middleware\DispatchAfterCurrentBusMiddleware->handle()#5 /vagrant/vendor/symfony/messenger/Middleware/AddBusNameStampMiddleware.php(37): Symfony\Component\Messenger\Middleware\RejectRedeliveredMessageMiddleware->handle()#6 /vagrant/vendor/symfony/messenger/Middleware/TraceableMiddleware.php(40): Symfony\Component\Messenger\Middleware\AddBusNameStampMiddleware->handle()#7 /vagrant/vendor/symfony/messenger/MessageBus.php(70): Symfony\Component\Messenger\Middleware\TraceableMiddleware->handle()#8 /vagrant/vendor/symfony/messenger/TraceableMessageBus.php(38): Symfony\Component\Messenger\MessageBus->dispatch()#9 /vagrant/src/Messenger/MessageBus.php(37): Symfony\Component\Messenger\TraceableMessageBus->dispatch()#10 /vagrant/vendor/symfony/mailer/Mailer.php(66): App\Messenger\MessageBus->dispatch()#11 /vagrant/src/Mailer/Mailer.php(83): Symfony\Component\Mailer\Mailer->send()#12 /vagrant/src/Mailer/Mailer.php(96): App\Mailer\Mailer->send()#13 /vagrant/src/MessageHandler/Trading/StrategySubscriptionMessageHandler.php(118): App\Mailer\Mailer->sendEmail()#14 /vagrant/src/MessageHandler/Trading/StrategySubscriptionMessageHandler.php(72): App\MessageHandler\Trading\StrategySubscriptionMessageHandler->handle()#15 /vagrant/vendor/symfony/messenger/Middleware/HandleMessageMiddleware.php(152): App\MessageHandler\Trading\StrategySubscriptionMessageHandler->__invoke()#16 /vagrant/vendor/symfony/messenger/Middleware/HandleMessageMiddleware.php(91): Symfony\Component\Messenger\Middleware\HandleMessageMiddleware->callHandler()#17 /vagrant/vendor/symfony/messenger/Middleware/SendMessageMiddleware.php(71): Symfony\Component\Messenger\Middleware\HandleMessageMiddleware->handle()#18 /vagrant/vendor/symfony/messenger/Middleware/FailedMessageProcessingMiddleware.php(34): Symfony\Component\Messenger\Middleware\SendMessageMiddleware->handle()#19 /vagrant/vendor/symfony/messenger/Middleware/DispatchAfterCurrentBusMiddleware.php(68): Symfony\Component\Messenger\Middleware\FailedMessageProcessingMiddleware->handle()#20 /vagrant/vendor/symfony/messenger/Middleware/RejectRedeliveredMessageMiddleware.php(41): Symfony\Component\Messenger\Middleware\DispatchAfterCurrentBusMiddleware->handle()#21 /vagrant/vendor/symfony/messenger/Middleware/AddBusNameStampMiddleware.php(37): Symfony\Component\Messenger\Middleware\RejectRedeliveredMessageMiddleware->handle()#22 /vagrant/vendor/symfony/messenger/Middleware/TraceableMiddleware.php(40): Symfony\Component\Messenger\Middleware\AddBusNameStampMiddleware->handle()#23 /vagrant/vendor/symfony/messenger/MessageBus.php(70): Symfony\Component\Messenger\Middleware\TraceableMiddleware->handle()#24 /vagrant/vendor/symfony/messenger/TraceableMessageBus.php(38): Symfony\Component\Messenger\MessageBus->dispatch()#25 /vagrant/vendor/symfony/messenger/RoutableMessageBus.php(54): Symfony\Component\Messenger\TraceableMessageBus->dispatch()#26 /vagrant/vendor/symfony/messenger/Worker.php(162): Symfony\Component\Messenger\RoutableMessageBus->dispatch()#27 /vagrant/vendor/symfony/messenger/Worker.php(109): Symfony\Component\Messenger\Worker->handleMessage()#28 /vagrant/vendor/symfony/messenger/Command/ConsumeMessagesCommand.php(238): Symfony\Component\Messenger\Worker->run()#29 /vagrant/vendor/symfony/console/Command/Command.php(326): Symfony\Component\Messenger\Command\ConsumeMessagesCommand->execute()#30 /vagrant/vendor/symfony/console/Application.php(1096): Symfony\Component\Console\Command\Command->run()#31 /vagrant/vendor/symfony/framework-bundle/Console/Application.php(126): Symfony\Component\Console\Application->doRunCommand()#32 /vagrant/vendor/symfony/console/Application.php(324): Symfony\Bundle\FrameworkBundle\Console\Application->doRunCommand()#33 /vagrant/vendor/symfony/framework-bundle/Console/Application.php(80): Symfony\Component\Console\Application->doRun()#34 /vagrant/vendor/symfony/console/Application.php(175): Symfony\Bundle\FrameworkBundle\Console\Application->doRun()#35 /vagrant/vendor/symfony/runtime/Runner/Symfony/ConsoleApplicationRunner.php(49): Symfony\Component\Console\Application->run()#36 /vagrant/vendor/autoload_runtime.php(29): Symfony\Component\Runtime\Runner\Symfony\ConsoleApplicationRunner->run()#37 /vagrant/bin/console(11): require_once('...')#38 {main}```TODO:- [x] Add test for retry logic when publishing messagesCommits-------f123370 [Messenger] [Amqp] Handle AMQPConnectionException when publishing a message.

Adding licensing info