Merge branch '3.3' into 3.4

* 3.3:
  [Console] Fix traversable autocomplete values
  [ExpressionLanguage] Fix PhpDoc type-hints on Token value
  bumped Symfony version to 3.3.12
  updated VERSION for 3.3.11
  updated CHANGELOG for 3.3.11
  bumped Symfony version to 2.8.30
  updated VERSION for 2.8.29
  updated CHANGELOG for 2.8.29
  bumped Symfony version to 2.7.37
  updated VERSION for 2.7.36
  update CONTRIBUTORS for 2.7.36
  updated CHANGELOG for 2.7.36

Author: nicolas-grekas

composer.json

@@ -24,7 +24,7 @@
         "symfony/asset": "~2.8|~3.0|~4.0",
         "symfony/dependency-injection": "~2.8|~3.0|~4.0",
         "symfony/finder": "~2.8|~3.0|~4.0",
-        "symfony/form": "~3.4|~4.0",
+        "symfony/form": "~3.4-beta4|~4.0-beta4",
         "symfony/http-foundation": "^3.3.11|~4.0",
         "symfony/http-kernel": "~3.2|~4.0",
         "symfony/polyfill-intl-icu": "~1.0",
@@ -41,7 +41,7 @@
         "symfony/web-link": "~3.3|~4.0"
     },
     "conflict": {
-        "symfony/form": "<3.4-beta4|~4.0,<4.0-beta4",
+        "symfony/form": "<3.4",
         "symfony/console": "<3.4"
     },
     "suggest": {