Merge branch '3.4' into 4.1

* 3.4:
  Fixed tiny grammar error in flex.rst
  [Validator] Range constraint: min and mix can be integer or string
  update year in license
  added blank line after .. versionadded:: directive
  add missing blank line after directive
  Add missing imports and remove useless

Author: javiereguiluz

components/cache/adapters/memcached_adapter.rst

@@ -278,6 +278,7 @@ Available Options
     are valid and fit within the design of the protocol being used.
 
 .. tip::
+
     Reference the `Memcached`_ extension's `predefined constants`_ documentation
     for additional information about the available options.
 

components/cache/adapters/redis_adapter.rst

@@ -139,6 +139,7 @@ Available Options
     connection attempt times out.
 
 .. note::
+
     When using the `Predis`_ library some additional Predis-specific options are available.
     Reference the `Predis Connection Parameters`_ documentation for more information.
 

components/cache/cache_pools.rst

@@ -152,6 +152,7 @@ when all items are successfully deleted)::
         $ php bin/console cache:pool:clear cache.validation cache.app
 
 .. versionadded:: 4.1
+
     The ``cache:pool:delete`` command was introduced in Symfony 4.1.
 
 .. _component-cache-cache-pool-prune:

components/console/helpers/questionhelper.rst

@@ -25,6 +25,7 @@ Suppose you want to confirm an action before actually executing it. Add
 the following to your command::
 
     // ...
+    use Symfony\Component\Console\Command\Command;
     use Symfony\Component\Console\Input\InputInterface;
     use Symfony\Component\Console\Output\OutputInterface;
     use Symfony\Component\Console\Question\ConfirmationQuestion;

components/console/helpers/table.rst

@@ -20,7 +20,10 @@ When building a console application it may be useful to display tabular data:
 To display a table, use :class:`Symfony\\Component\\Console\\Helper\\Table`,
 set the headers, set the rows and then render the table::
 
+    use Symfony\Component\Console\Command\Command;
     use Symfony\Component\Console\Helper\Table;
+    use Symfony\Component\Console\Input\InputInterface;
+    use Symfony\Component\Console\Output\OutputInterface;
     // ...
 
     class SomeCommand extends Command

components/form.rst

@@ -224,6 +224,7 @@ to bootstrap or access Twig and add the :class:`Symfony\\Bridge\\Twig\\Extension
         ->getFormFactory();
 
 .. versionadded:: 1.30
+
     The ``Twig\\RuntimeLoader\\FactoryRuntimeLoader`` was introduced in Twig 1.30.
 
 The exact details of your `Twig Configuration`_ will vary, but the goal is

components/phpunit_bridge.rst

@@ -515,7 +515,7 @@ namespaces in the ``phpunit.xml`` file, as done for example in the
             </listener>
         </listeners>
     </phpunit>
-    
+
 Under the hood, a PHPUnit listener injects the mocked functions in the tested
 classes' namespace. In order to work as expected, the listener has to run before
 the tested class ever runs. By default, the mocked functions are created when the

components/process.rst

@@ -113,6 +113,7 @@ with a non-zero code)::
 .. tip::
 
     .. versionadded:: 3.3
+
         The ability to define commands as arrays of arguments was introduced in
         Symfony 3.3.
 

components/property_info.rst

@@ -241,6 +241,7 @@ to determine if it's accessible. This based on how the :doc:`PropertyAccess </co
 works.
 
 .. versionadded:: 4.1
+
     The support of hasser methods in the ``ReflectionExtractor`` class was
     introduced in Symfony 4.1.
 

components/serializer.rst

@@ -165,6 +165,7 @@ needs three parameters:
 #. The encoder used to convert that information into an array
 
 .. versionadded:: 3.3
+
     Support for the ``allow_extra_attributes`` key in the context was introduced
     in Symfony 3.3.
 
@@ -631,6 +632,7 @@ There are several types of normalizers available:
     into a list of errors according to the `RFC 7807`_ standard.
 
     .. versionadded:: 4.1
+
         The ``ConstraintViolationListNormalizer`` was introduced in Symfony 4.1.
 
 .. _component-serializer-encoders:
@@ -740,7 +742,6 @@ The ``YamlEncoder``
 This encoder requires the :doc:`Yaml Component </components/yaml>` and
 transforms from and to Yaml.
 
-
 .. _component-serializer-handling-circular-references:
 
 Handling Circular References