Merge branch '4.4' into 5.0

* 4.4:
  Update readme
  Fixed the minimum Twig version needed for lazy extensions

.doctor-rst.yaml

@@ -69,8 +69,8 @@ whitelist:
         - '.. _`LDAP injection`: http://projects.webappsec.org/w/page/13246947/LDAP%20Injection'
         - '.. versionadded:: 0.21.0' # Encore
         - '.. versionadded:: 2.4.0' # SwiftMailer
-        - '.. versionadded:: 1.26' # Twig
         - '.. versionadded:: 1.30' # Twig
+        - '.. versionadded:: 1.35' # Twig
         - '.. versionadded:: 1.2' # MakerBundle
         - '.. versionadded:: 1.11' # MakerBundle
         - '.. versionadded:: 1.3' # MakerBundle

README.markdown

@@ -18,7 +18,8 @@ Symfony documentation, please read
 SymfonyCloud
 ------------
 
-Pull requests are automatically built by [SymfonyCloud](https://symfony.com/cloud).
+Thanks to [SymfonyCloud](https://symfony.com/cloud) for providing an integration
+server where Pull Requests are built and can be reviewed by contributors.
 
 Docker
 ------

templating/twig_extension.rst

@@ -109,9 +109,9 @@ this command to confirm that your new filter was successfully registered:
 Creating Lazy-Loaded Twig Extensions
 ------------------------------------
 
-.. versionadded:: 1.26
+.. versionadded:: 1.35
 
-    Support for lazy-loaded extensions was introduced in Twig 1.26.
+    Support for lazy-loaded extensions was introduced in Twig 1.35.0 and 2.4.4.
 
 Including the code of the custom filters/functions in the Twig extension class
 is the simplest way to create extensions. However, Twig must initialize all