CHANGELOG ========= 5.2.0 ----- * Added `framework.http_cache` configuration tree * Added `framework.trusted_proxies` and `framework.trusted_headers` configuration options * Deprecated the public `form.factory`, `form.type.file`, `translator`, `security.csrf.token_manager`, `serializer`, `cache_clearer`, `filesystem` and `validator` services to private. * Added `TemplateAwareDataCollectorInterface` and `AbstractDataCollector` to simplify custom data collector creation and leverage autoconfiguration * Add `cache.adapter.redis_tag_aware` tag to use `RedisCacheAwareAdapter` * added `framework.http_client.retry_failing` configuration tree * added `assertCheckboxChecked()` and `assertCheckboxNotChecked()` in `WebTestCase` * added `assertFormValue()` and `assertNoFormValue()` in `WebTestCase` * Added "--as-tree=3" option to `translation:update` command to dump messages as a tree-like structure. The given value defines the level where to switch to inline YAML * Deprecated the `lock.RESOURCE_NAME` and `lock.RESOURCE_NAME.store` services and the `lock`, `LockInterface`, `lock.store` and `PersistingStoreInterface` aliases, use `lock.RESOURCE_NAME.factory`, `lock.factory` or `LockFactory` instead. 5.1.0 ----- * Removed `--no-backup` option from `translation:update` command (broken since `5.0.0`) * Added link to source for controllers registered as named services * Added link to source on controller on `router:match`/`debug:router` (when `framework.ide` is configured) * Added the `framework.router.default_uri` configuration option to configure the default `RequestContext` * Made `MicroKernelTrait::configureContainer()` compatible with `ContainerConfigurator` * Added a new `mailer.message_bus` option to configure or disable the message bus to use to send mails. * Added flex-compatible default implementation for `MicroKernelTrait::registerBundles()` * Deprecated passing a `RouteCollectionBuilder` to `MicroKernelTrait::configureRoutes()`, type-hint `RoutingConfigurator` instead * The `TemplateController` now accepts context argument * Deprecated *not* setting the "framework.router.utf8" configuration option as it will default to `true` in Symfony 6.0 * Added tag `routing.expression_language_function` to define functions available in route conditions * Added `debug:container --deprecations` option to see compile-time deprecations. * Made `BrowserKitAssertionsTrait` report the original error message in case of a failure * Added ability for `config:dump-reference` and `debug:config` to dump and debug kernel container extension configuration. * Deprecated `session.attribute_bag` service and `session.flash_bag` service. 5.0.0 ----- * Removed support to load translation resources from the legacy directories `src/Resources/translations/` and `src/Resources//translations/` * Removed `ControllerNameParser`. * Removed `ResolveControllerNameSubscriber` * Removed support for `bundle:controller:action` to reference controllers. Use `serviceOrFqcn::method` instead * Removed support for PHP templating, use Twig instead * Removed `Controller`, use `AbstractController` instead * Removed `Client`, use `KernelBrowser` instead * Removed `ContainerAwareCommand`, use dependency injection instead * Removed the `validation.strict_email` option, use `validation.email_validation_mode` instead * Removed the `cache.app.simple` service and its corresponding PSR-16 autowiring alias * Removed cache-related compiler passes and `RequestDataCollector` * Removed the `translator.selector` and `session.save_listener` services * Removed `SecurityUserValueResolver`, use `UserValueResolver` instead * Removed `routing.loader.service`. * Service route loaders must be tagged with `routing.route_loader`. * Added `slugger` service and `SluggerInterface` alias * Removed the `lock.store.flock`, `lock.store.semaphore`, `lock.store.memcached.abstract` and `lock.store.redis.abstract` services. * Removed the `router.cache_class_prefix` parameter. 4.4.0 ----- * Added `lint:container` command to check that services wiring matches type declarations * Added `MailerAssertionsTrait` * Deprecated support for `templating` engine in `TemplateController`, use Twig instead * Deprecated the `$parser` argument of `ControllerResolver::__construct()` and `DelegatingLoader::__construct()` * Deprecated the `controller_name_converter` and `resolve_controller_name_subscriber` services * The `ControllerResolver` and `DelegatingLoader` classes have been marked as `final` * Added support for configuring chained cache pools * Deprecated calling `WebTestCase::createClient()` while a kernel has been booted, ensure the kernel is shut down before calling the method * Deprecated `routing.loader.service`, use `routing.loader.container` instead. * Not tagging service route loaders with `routing.route_loader` has been deprecated. * Overriding the methods `KernelTestCase::tearDown()` and `WebTestCase::tearDown()` without the `void` return-type is deprecated. * Added new `error_controller` configuration to handle system exceptions * Added sort option for `translation:update` command. * [BC Break] The `framework.messenger.routing.senders` config key is not deeply merged anymore. * Added `secrets:*` commands to deal with secrets seamlessly. * Made `framework.session.handler_id` accept a DSN * Marked the `RouterDataCollector` class as `@final`. * [BC Break] The `framework.messenger.buses..middleware` config key is not deeply merged anymore. * Moved `MailerAssertionsTrait` in `KernelTestCase` 4.3.0 ----- * Deprecated the `framework.templating` option, configure the Twig bundle instead. * Added `WebTestAssertionsTrait` (included by default in `WebTestCase`) * Renamed `Client` to `KernelBrowser` * Not passing the project directory to the constructor of the `AssetsInstallCommand` is deprecated. This argument will be mandatory in 5.0. * Deprecated the "Psr\SimpleCache\CacheInterface" / "cache.app.simple" service, use "Symfony\Contracts\Cache\CacheInterface" / "cache.app" instead * Added the ability to specify a custom `serializer` option for each transport under`framework.messenger.transports`. * Added the `RegisterLocaleAwareServicesPass` and configured the `LocaleAwareListener` * [BC Break] When using Messenger, the default transport changed from using Symfony's serializer service to use `PhpSerializer`, which uses PHP's native `serialize()` and `unserialize()` functions. To use the original serialization method, set the `framework.messenger.default_serializer` config option to `messenger.transport.symfony_serializer`. Or set the `serializer` option under one specific `transport`. * [BC Break] The `framework.messenger.serializer` config key changed to `framework.messenger.default_serializer`, which holds the string service id and `framework.messenger.symfony_serializer`, which configures the options if you're using Symfony's serializer. * [BC Break] Removed the `framework.messenger.routing.send_and_handle` configuration. Instead of setting it to true, configure a `SyncTransport` and route messages to it. * Added information about deprecated aliases in `debug:autowiring` * Added php ini session options `sid_length` and `sid_bits_per_character` to the `session` section of the configuration * Added support for Translator paths, Twig paths in translation commands. * Added support for PHP files with translations in translation commands. * Added support for boolean container parameters within routes. * Added the `messenger:setup-transports` command to setup messenger transports * Added a `InMemoryTransport` to Messenger. Use it with a DSN starting with `in-memory://`. * Added `framework.property_access.throw_exception_on_invalid_property_path` config option. * Added `cache:pool:list` command to list all available cache pools. 4.2.0 ----- * Added a `AbstractController::addLink()` method to add Link headers to the current response * Allowed configuring taggable cache pools via a new `framework.cache.pools.tags` option (bool|service-id) * Allowed configuring PDO-based cache pools via a new `cache.adapter.pdo` abstract service * Deprecated auto-injection of the container in AbstractController instances, register them as service subscribers instead * Deprecated processing of services tagged `security.expression_language_provider` in favor of a new `AddExpressionLanguageProvidersPass` in SecurityBundle. * Deprecated the `Symfony\Bundle\FrameworkBundle\Controller\Controller` class in favor of `Symfony\Bundle\FrameworkBundle\Controller\AbstractController`. * Enabled autoconfiguration for `Psr\Log\LoggerAwareInterface` * Added new "auto" mode for `framework.session.cookie_secure` to turn it on when HTTPS is used * Removed the `framework.messenger.encoder` and `framework.messenger.decoder` options. Use the `framework.messenger.serializer.id` option to replace the Messenger serializer. * Deprecated the `ContainerAwareCommand` class in favor of `Symfony\Component\Console\Command\Command` * Made `debug:container` and `debug:autowiring` ignore backslashes in service ids * Deprecated the `Templating\Helper\TranslatorHelper::transChoice()` method, use the `trans()` one instead with a `%count%` parameter * Deprecated `CacheCollectorPass`. Use `Symfony\Component\Cache\DependencyInjection\CacheCollectorPass` instead. * Deprecated `CachePoolClearerPass`. Use `Symfony\Component\Cache\DependencyInjection\CachePoolClearerPass` instead. * Deprecated `CachePoolPass`. Use `Symfony\Component\Cache\DependencyInjection\CachePoolPass` instead. * Deprecated `CachePoolPrunerPass`. Use `Symfony\Component\Cache\DependencyInjection\CachePoolPrunerPass` instead. * Deprecated support for legacy translations directories `src/Resources/translations/` and `src/Resources//translations/`, use `translations/` instead. * Deprecated support for the legacy directory structure in `translation:update` and `debug:translation` commands. 4.1.0 ----- * Allowed to pass an optional `LoggerInterface $logger` instance to the `Router` * Added a new `parameter_bag` service with related autowiring aliases to access parameters as-a-service * Allowed the `Router` to work with any PSR-11 container * Added option in workflow dump command to label graph with a custom label * Using a `RouterInterface` that does not implement the `WarmableInterface` is deprecated. * Warming up a router in `RouterCacheWarmer` that does not implement the `WarmableInterface` is deprecated and will not be supported anymore in 5.0. * The `RequestDataCollector` class has been deprecated. Use the `Symfony\Component\HttpKernel\DataCollector\RequestDataCollector` class instead. * The `RedirectController` class allows for 307/308 HTTP status codes * Deprecated `bundle:controller:action` syntax to reference controllers. Use `serviceOrFqcn::method` instead where `serviceOrFqcn` is either the service ID or the FQCN of the controller. * Deprecated `Symfony\Bundle\FrameworkBundle\Controller\ControllerNameParser` * The `container.service_locator` tag of `ServiceLocator`s is now autoconfigured. * Add the ability to search a route in `debug:router`. * Add the ability to use SameSite cookies for sessions. 4.0.0 ----- * The default `type` option of the `framework.workflows.*` configuration entries is `state_machine` * removed `AddConsoleCommandPass`, `AddConstraintValidatorsPass`, `AddValidatorInitializersPass`, `CompilerDebugDumpPass`, `ConfigCachePass`, `ControllerArgumentValueResolverPass`, `FormPass`, `PropertyInfoPass`, `RoutingResolverPass`, `SerializerPass`, `ValidateWorkflowsPass` * made `Translator::__construct()` `$defaultLocale` argument required * removed `SessionListener`, `TestSessionListener` * Removed `cache:clear` warmup part along with the `--no-optional-warmers` option * Removed core form types services registration when unnecessary * Removed `framework.serializer.cache` option and `serializer.mapping.cache.apc`, `serializer.mapping.cache.doctrine.apc` services * Removed `ConstraintValidatorFactory` * Removed class parameters related to routing * Removed absolute template paths support in the template name parser * Removed support of the `KERNEL_DIR` environment variable with `KernelTestCase::getKernelClass()`. * Removed the `KernelTestCase::getPhpUnitXmlDir()` and `KernelTestCase::getPhpUnitCliConfigArgument()` methods. * Removed the "framework.validation.cache" configuration option. Configure the "cache.validator" service under "framework.cache.pools" instead. * Removed `PhpStringTokenParser`, use `Symfony\Component\Translation\Extractor\PhpStringTokenParser` instead. * Removed `PhpExtractor`, use `Symfony\Component\Translation\Extractor\PhpExtractor` instead. * Removed the `use_strict_mode` session option, it's is now enabled by default 3.4.0 ----- * Added `translator.default_path` option and parameter * Session `use_strict_mode` is now enabled by default and the corresponding option has been deprecated * Made the `cache:clear` command to *not* clear "app" PSR-6 cache pools anymore, but to still clear "system" ones; use the `cache:pool:clear` command to clear "app" pools instead * Always register a minimalist logger that writes in `stderr` * Deprecated `profiler.matcher` option * Added support for `EventSubscriberInterface` on `MicroKernelTrait` * Removed `doctrine/cache` from the list of required dependencies in `composer.json` * Deprecated `validator.mapping.cache.doctrine.apc` service * The `symfony/stopwatch` dependency has been removed, require it via `composer require symfony/stopwatch` in your `dev` environment. * Deprecated using the `KERNEL_DIR` environment variable with `KernelTestCase::getKernelClass()`. * Deprecated the `KernelTestCase::getPhpUnitXmlDir()` and `KernelTestCase::getPhpUnitCliConfigArgument()` methods. * Deprecated `AddCacheClearerPass`, use tagged iterator arguments instead. * Deprecated `AddCacheWarmerPass`, use tagged iterator arguments instead. * Deprecated `TranslationDumperPass`, use `Symfony\Component\Translation\DependencyInjection\TranslationDumperPass` instead * Deprecated `TranslationExtractorPass`, use `Symfony\Component\Translation\DependencyInjection\TranslationExtractorPass` instead * Deprecated `TranslatorPass`, use `Symfony\Component\Translation\DependencyInjection\TranslatorPass` instead * Added `command` attribute to the `console.command` tag which takes the command name as value, using it makes the command lazy * Added `cache:pool:prune` command to allow manual stale cache item pruning of supported PSR-6 and PSR-16 cache pool implementations * Deprecated `Symfony\Bundle\FrameworkBundle\Translation\TranslationLoader`, use `Symfony\Component\Translation\Reader\TranslationReader` instead * Deprecated `translation.loader` service, use `translation.reader` instead * `AssetsInstallCommand::__construct()` now takes an instance of `Symfony\Component\Filesystem\Filesystem` as first argument * `CacheClearCommand::__construct()` now takes an instance of `Symfony\Component\HttpKernel\CacheClearer\CacheClearerInterface` as first argument * `CachePoolClearCommand::__construct()` now takes an instance of `Symfony\Component\HttpKernel\CacheClearer\Psr6CacheClearer` as first argument * `EventDispatcherDebugCommand::__construct()` now takes an instance of `Symfony\Component\EventDispatcher\EventDispatcherInterface` as first argument * `RouterDebugCommand::__construct()` now takes an instance of `Symfony\Component\Routing\RouterInterface` as first argument * `RouterMatchCommand::__construct()` now takes an instance of `Symfony\Component\Routing\RouterInterface` as first argument * `TranslationDebugCommand::__construct()` now takes an instance of `Symfony\Component\Translation\TranslatorInterface` as first argument * `TranslationUpdateCommand::__construct()` now takes an instance of `Symfony\Component\Translation\TranslatorInterface` as first argument * `AssetsInstallCommand`, `CacheClearCommand`, `CachePoolClearCommand`, `EventDispatcherDebugCommand`, `RouterDebugCommand`, `RouterMatchCommand`, `TranslationDebugCommand`, `TranslationUpdateCommand`, `XliffLintCommand` and `YamlLintCommand` classes have been marked as final * Added `asset.request_context.base_path` and `asset.request_context.secure` parameters to provide a default request context in case the stack is empty (similar to `router.request_context.*` parameters) * Display environment variables managed by `Dotenv` in `AboutCommand` 3.3.0 ----- * Not defining the `type` option of the `framework.workflows.*` configuration entries is deprecated. The default value will be `state_machine` in Symfony 4.0. * Deprecated the `CompilerDebugDumpPass` class * Deprecated the "framework.trusted_proxies" configuration option and the corresponding "kernel.trusted_proxies" parameter * Added a new version strategy option called "json_manifest_path" that allows you to use the `JsonManifestVersionStrategy`. * Added `Symfony\Bundle\FrameworkBundle\Controller\AbstractController`. It provides the same helpers as the `Controller` class, but does not allow accessing the dependency injection container, in order to encourage explicit dependency declarations. * Added support for the `controller.service_arguments` tag, for injecting services into controllers' actions * Changed default configuration for assets/forms/validation/translation/serialization/csrf from `canBeEnabled()` to `canBeDisabled()` when Flex is used * The server:* commands and their associated router files were moved to WebServerBundle * Translation related services are not loaded anymore when the `framework.translator` option is disabled. * Added `GlobalVariables::getToken()` * Deprecated `Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\AddConsoleCommandPass`. Use `Symfony\Component\Console\DependencyInjection\AddConsoleCommandPass` instead. * Added configurable paths for validation files * Deprecated `SerializerPass`, use `Symfony\Component\Serializer\DependencyInjection\SerializerPass` instead * Deprecated `FormPass`, use `Symfony\Component\Form\DependencyInjection\FormPass` instead * Deprecated `SessionListener` * Deprecated `TestSessionListener` * Deprecated `Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\ConfigCachePass`. Use tagged iterator arguments instead. * Deprecated `PropertyInfoPass`, use `Symfony\Component\PropertyInfo\DependencyInjection\PropertyInfoPass` instead * Deprecated `ControllerArgumentValueResolverPass`. Use `Symfony\Component\HttpKernel\DependencyInjection\ControllerArgumentValueResolverPass` instead * Deprecated `RoutingResolverPass`, use `Symfony\Component\Routing\DependencyInjection\RoutingResolverPass` instead * [BC BREAK] The `server:run`, `server:start`, `server:stop` and `server:status` console commands have been moved to a dedicated bundle. Require `symfony/web-server-bundle` in your composer.json and register `Symfony\Bundle\WebServerBundle\WebServerBundle` in your AppKernel to use them. * Added `$defaultLocale` as 3rd argument of `Translator::__construct()` making `Translator` works with any PSR-11 container * Added `framework.serializer.mapping` config option allowing to define custom serialization mapping files and directories * Deprecated `AddValidatorInitializersPass`, use `Symfony\Component\Validator\DependencyInjection\AddValidatorInitializersPass` instead * Deprecated `AddConstraintValidatorsPass`, use `Symfony\Component\Validator\DependencyInjection\AddConstraintValidatorsPass` instead * Deprecated `ValidateWorkflowsPass`, use `Symfony\Component\Workflow\DependencyInjection\ValidateWorkflowsPass` instead * Deprecated `ConstraintValidatorFactory`, use `Symfony\Component\Validator\ContainerConstraintValidatorFactory` instead. * Deprecated `PhpStringTokenParser`, use `Symfony\Component\Translation\Extractor\PhpStringTokenParser` instead. * Deprecated `PhpExtractor`, use `Symfony\Component\Translation\Extractor\PhpExtractor` instead. 3.2.0 ----- * Removed `doctrine/annotations` from the list of required dependencies in `composer.json` * Removed `symfony/security-core` and `symfony/security-csrf` from the list of required dependencies in `composer.json` * Removed `symfony/templating` from the list of required dependencies in `composer.json` * Removed `symfony/translation` from the list of required dependencies in `composer.json` * Removed `symfony/asset` from the list of required dependencies in `composer.json` * The `Resources/public/images/*` files have been removed. * The `Resources/public/css/*.css` files have been removed (they are now inlined in TwigBundle). * Added possibility to prioritize form type extensions with `'priority'` attribute on tags `form.type_extension` 3.1.0 ----- * Added `Controller::json` to simplify creating JSON responses when using the Serializer component * Deprecated absolute template paths support in the template name parser * Deprecated using core form types without dependencies as services * Added `Symfony\Component\HttpHernel\DataCollector\RequestDataCollector::onKernelResponse()` * Added `Symfony\Bundle\FrameworkBundle\DataCollector\RequestDataCollector` * The `framework.serializer.cache` option and the service `serializer.mapping.cache.apc` have been deprecated. APCu should now be automatically used when available. 3.0.0 ----- * removed `validator.api` parameter * removed `alias` option of the `form.type` tag 2.8.0 ----- * Deprecated the `alias` option of the `form.type_extension` tag in favor of the `extended_type`/`extended-type` option * Deprecated the `alias` option of the `form.type` tag * Deprecated the Shell 2.7.0 ----- * Added possibility to extract translation messages from a file or files besides extracting from a directory * Added `TranslationsCacheWarmer` to create catalogues at warmup 2.6.0 ----- * Added helper commands (`server:start`, `server:stop` and `server:status`) to control the built-in web server in the background * Added `Controller::isCsrfTokenValid` helper * Added configuration for the PropertyAccess component * Added `Controller::redirectToRoute` helper * Added `Controller::addFlash` helper * Added `Controller::isGranted` helper * Added `Controller::denyAccessUnlessGranted` helper * Deprecated `app.security` in twig as `app.user` and `is_granted()` are already available 2.5.0 ----- * Added `translation:debug` command * Added `--no-backup` option to `translation:update` command * Added `config:debug` command * Added `yaml:lint` command * Deprecated the `RouterApacheDumperCommand` which will be removed in Symfony 3.0. 2.4.0 ----- * allowed multiple IP addresses in profiler matcher settings * added stopwatch helper to time templates with the WebProfilerBundle * added service definition for "security.secure_random" service * added service definitions for the new Security CSRF sub-component 2.3.0 ----- * [BC BREAK] added a way to disable the profiler (when disabling the profiler, it is now completely removed) To get the same "disabled" behavior as before, set `enabled` to `true` and `collect` to `false` * [BC BREAK] the `Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\RegisterKernelListenersPass` was moved to `Component\HttpKernel\DependencyInjection\RegisterListenersPass` * added ControllerNameParser::build() which converts a controller short notation (a:b:c) to a class::method notation * added possibility to run PHP built-in server in production environment * added possibility to load the serializer component in the service container * added route debug information when using the `router:match` command * added `TimedPhpEngine` * added `--clean` option to the `translation:update` command * added `http_method_override` option * added support for default templates per render tag * added FormHelper::form(), FormHelper::start() and FormHelper::end() * deprecated FormHelper::enctype() in favor of FormHelper::start() * RedirectController actions now receive the Request instance via the method signature. 2.2.0 ----- * added a new `uri_signer` service to help sign URIs * deprecated `Symfony\Bundle\FrameworkBundle\HttpKernel::render()` and `Symfony\Bundle\FrameworkBundle\HttpKernel::forward()` * deprecated the `Symfony\Bundle\FrameworkBundle\HttpKernel` class in favor of `Symfony\Component\HttpKernel\DependencyInjection\ContainerAwareHttpKernel` * added support for adding new HTTP content rendering strategies (like ESI and Hinclude) in the DIC via the `kernel.fragment_renderer` tag * [BC BREAK] restricted the `Symfony\Bundle\FrameworkBundle\HttpKernel::render()` method to only accept URIs or ControllerReference instances * `Symfony\Bundle\FrameworkBundle\HttpKernel::render()` method signature changed and the first argument must now be a URI or a ControllerReference instance (the `generateInternalUri()` method was removed) * The internal routes (`Resources/config/routing/internal.xml`) have been removed and replaced with a listener (`Symfony\Component\HttpKernel\EventListener\FragmentListener`) * The `render` method of the `actions` templating helper signature and arguments changed * replaced Symfony\Bundle\FrameworkBundle\Controller\TraceableControllerResolver by Symfony\Component\HttpKernel\Controller\TraceableControllerResolver * replaced Symfony\Component\HttpKernel\Debug\ContainerAwareTraceableEventDispatcher by Symfony\Component\HttpKernel\Debug\TraceableEventDispatcher * added Client::enableProfiler() * a new parameter has been added to the DIC: `router.request_context.base_url` You can customize it for your functional tests or for generating URLs with the right base URL when your are in the CLI context. * added support for default templates per render tag 2.1.0 ----- * moved the translation files to the Form and Validator components * changed the default extension for XLIFF files from .xliff to .xlf * moved Symfony\Bundle\FrameworkBundle\ContainerAwareEventDispatcher to Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher * moved Symfony\Bundle\FrameworkBundle\Debug\TraceableEventDispatcher to Symfony\Component\EventDispatcher\ContainerAwareTraceableEventDispatcher * added a router:match command * added a config:dump-reference command * added a server:run command * added kernel.event_subscriber tag * added a way to create relative symlinks when running assets:install command (--relative option) * added Controller::getUser() * [BC BREAK] assets_base_urls and base_urls merging strategy has changed * changed the default profiler storage to use the filesystem instead of SQLite * added support for placeholders in route defaults and requirements (replaced by the value set in the service container) * added Filesystem component as a dependency * added support for hinclude (use ``standalone: 'js'`` in render tag) * session options: lifetime, path, domain, secure, httponly were deprecated. Prefixed versions should now be used instead: cookie_lifetime, cookie_path, cookie_domain, cookie_secure, cookie_httponly * [BC BREAK] following session options: 'lifetime', 'path', 'domain', 'secure', 'httponly' are now prefixed with cookie_ when dumped to the container * Added `handler_id` configuration under `session` key to represent `session.handler` service, defaults to `session.handler.native_file`. * Added `gc_maxlifetime`, `gc_probability`, and `gc_divisor` to session configuration. This means session garbage collection has a `gc_probability`/`gc_divisor` chance of being run. The `gc_maxlifetime` defines how long a session can idle for. It is different from cookie lifetime which declares how long a cookie can be stored on the remote client. * Removed 'auto_start' configuration parameter from session config. The session will start on demand. * [BC BREAK] TemplateNameParser::parseFromFilename() has been moved to a dedicated parser: TemplateFilenameParser::parse(). * [BC BREAK] Kernel parameters are replaced by their value wherever they appear in Route patterns, requirements and defaults. Use '%%' as the escaped value for '%'. * [BC BREAK] Switched behavior of flash messages to expire flash messages on retrieval using Symfony\Component\HttpFoundation\Session\Flash\FlashBag as opposed to on next pageload regardless of whether they are displayed or not.