Merge branch '3.4'

* 3.4:
  [TwigBridge] Fixed the .form-check-input class in the bs4 templates
  [Console] Fix traversable autocomplete values
  [SecurityBundle] Improve deprecations
  [DI] Friendlier name for generated container in "as_files" mode
  [Debug] Remove false-positive deprecation from DebugClassLoader
  [SecurityBundle] Add missing quotes in deprecation messages
  [ExpressionLanguage] Fix PhpDoc type-hints on Token value
  bumped Symfony version to 3.3.12
  Add default translations path option and convention
  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

Resources/views/Form/bootstrap_4_layout.html.twig

@@ -71,7 +71,7 @@
 
 {% block checkbox_widget -%}
     {%- set parent_label_class = parent_label_class|default(label_attr.class|default('')) -%}
-    {%- set attr = attr|merge({class: attr.class|default('form-check-input')}) -%}
+    {%- set attr = attr|merge({class: (attr.class|default('') ~ ' form-check-input')|trim}) -%}
     {% if 'checkbox-inline' in parent_label_class %}
         {{- form_label(form, null, { widget: parent() }) -}}
     {% else -%}
@@ -83,7 +83,7 @@
 
 {% block radio_widget -%}
     {%- set parent_label_class = parent_label_class|default(label_attr.class|default('')) -%}
-    {%- set attr = attr|merge({class: attr.class|default('form-check-input')}) -%}
+    {%- set attr = attr|merge({class: (attr.class|default('') ~ ' form-check-input')|trim}) -%}
     {%- if 'radio-inline' in parent_label_class -%}
         {{- form_label(form, null, { widget: parent() }) -}}
     {%- else -%}

composer.json

@@ -24,7 +24,7 @@
         "symfony/asset": "~3.4|~4.0",
         "symfony/dependency-injection": "~3.4|~4.0",
         "symfony/finder": "~3.4|~4.0",
-        "symfony/form": "~3.4-beta2|~4.0-beta2",
+        "symfony/form": "~3.4-beta4|~4.0-beta4",
         "symfony/http-foundation": "~3.4|~4.0",
         "symfony/http-kernel": "~3.4|~4.0",
         "symfony/polyfill-intl-icu": "~1.0",