Merge branch '3.4' into 4.2

* 3.4:
  Fix PHP-CS link
  Typo
  added a note about testing newer versions of Symfony

Author: OskarStark

cache.rst

@@ -321,7 +321,7 @@ and use that when configuring the pool.
                 factory: ['Symfony\Component\Cache\Adapter\RedisAdapter', 'createConnection']
                 arguments:
                     - 'redis://localhost'
-                    - [ retry_interval: 2, timeout: 10 ]
+                    - { retry_interval: 2, timeout: 10 }
 
     .. code-block:: xml
 

contributing/code/standards.rst

@@ -276,7 +276,7 @@ License
 * Symfony is released under the MIT license, and the license block has to be
   present at the top of every PHP file, before the namespace.
 
-.. _`PHP CS Fixer tool`: http://cs.sensiolabs.org/
+.. _`PHP CS Fixer tool`: https://cs.symfony.com/
 .. _`PSR-0`: https://www.php-fig.org/psr/psr-0/
 .. _`PSR-1`: https://www.php-fig.org/psr/psr-1/
 .. _`PSR-2`: https://www.php-fig.org/psr/psr-2/

setup/symfony_server.rst

@@ -348,6 +348,17 @@ commands from the Symfony server:
     # creates a new project based on the Symfony Demo application
     $ symfony new --demo my_project_name
 
+You can create a project depending on a **development** version as well (note
+that Composer will also set the stability to ``dev`` for all root dependencies):
+
+.. code-block:: terminal
+
+    # creates a new project based on Symfony's master branch
+    $ symfony new --version=dev-master my_project_name
+
+    # creates a new project based on Symfony's 4.3 dev branch
+    $ symfony new --version=4.3.x-dev my_project_name
+
 .. _`symfony.com/download`: https://symfony.com/download
 .. _`different ways of installing Symfony`: https://symfony.com/download
 .. _`Docker`: https://en.wikipedia.org/wiki/Docker_(software)