Merge branch '3.1'

* 3.1:
  [travis] Use hhvm-stable instead of discontinued hhvm-3.12
  bumped Symfony version to 3.1.6
  updated VERSION for 3.1.5
  updated CHANGELOG for 3.1.5
  bumped Symfony version to 2.8.13
  updated VERSION for 2.8.12
  updated CHANGELOG for 2.8.12
  bumped Symfony version to 2.7.20
  updated VERSION for 2.7.19
  update CONTRIBUTORS for 2.7.19
  updated CHANGELOG for 2.7.19
  [Validator] Url validator not validating hosts ending in a number

.travis.yml

@@ -20,7 +20,7 @@ env:
 matrix:
     include:
         # Use the newer stack for HHVM as HHVM does not support Precise anymore since a long time and so Precise has an outdated version
-        - php: hhvm-3.12
+        - php: hhvm-stable
           sudo: required
           dist: trusty
           group: edge

CHANGELOG-3.1.md

@@ -7,6 +7,51 @@ in 3.1 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v3.1.0...v3.1.1
 
+* 3.1.5 (2016-10-03)
+
+ * bug #20102 [Validator] Url validator not validating hosts ending in a number (gwkunze)
+ * bug #20132 Use "more entropy" option for uniqid() (javiereguiluz)
+ * bug #20122 [Validator] Reset constraint options (ro0NL)
+ * bug #20116 fixed AddConstraintValidatorsPass config (fabpot)
+ * bug #20078 Fix #19943 Make sure to process each interface metadata only once (lemoinem)
+ * bug #20080 [Form] compound forms without children should be considered rendered implicitly (backbone87)
+ * bug #20087 [VarDumper] Fix PHP 7.1 compat (nicolas-grekas)
+ * bug #20086 [VarDumper] Fix PHP 7.1 compat (nicolas-grekas)
+ * bug #20077 [Process] silent file operation to avoid open basedir issues (xabbuh)
+ * bug #20079 fixed Twig support for 1.26 and 2.0 (fabpot)
+ * bug #20051 Fix indexBy type extraction (lemoinem)
+ * bug #19951 [Finder] Trim trailing directory slash in ExcludeDirectoryFilterIterator (ro0NL)
+ * bug #19980 [Ldap] Fixed issue with legacy find() method not working as expected (csarrazi)
+ * bug #20026 [Cache] Fixed password used to make the redis connection. (ErikSaunier)
+ * bug #20018 [VarDumper] Fix test (nicolas-grekas)
+ * bug #20011 Use UUID for error codes for Form validator. (Koc)
+ * bug #20010 [DX] Fixed regression when exception message swallowed when logging it. (Koc)
+ * bug #19983 [TwigBridge] removed Twig null nodes (deprecated as of Twig 1.25) (fabpot)
+ * bug #19946 [Console] Fix parsing optionnal options with empty value in argv (chalasr)
+ * bug #19636 [Finder] no PHP warning on empty directory iteration (ggottwald)
+ * bug #19784 [HttpKernel] Fixed the nullable support for php 7.1 and below (iltar)
+ * bug #19923 [bugfix] [Console] Set `Input::$interactive` to `false` when command is executed with `--quiet` as verbosity level (phansys)
+ * bug #19811 Fixed the nullable support for php 7.1 and below (2.7, 2.8, 3.0) (iltar)
+ * bug #19853 [PropertyInfo] Make ReflectionExtractor compatible with ReflectionType changes in PHP 7.1 (teohhanhui)
+ * bug #19904 [Form] Fixed collapsed ChoiceType options attributes (HeahDude)
+ * bug #19872 [Filesystem] Consider the umask setting when dumping a file (leofeyer)
+ * bug #19908 [Config] Handle open_basedir restrictions in FileLocator (Nicofuma)
+ * bug #19893 [FrameworkBundle] Remove cache clearer default value in config (nicolas-grekas)
+ * bug #19924 [DoctrineBridge][PropertyInfo] Treat Doctrine decimal type as string (teohhanhui)
+ * bug #19932 Fixed bad merge (GrahamCampbell)
+ * bug #19922 [Yaml][TwigBridge] Use JSON_UNESCAPED_SLASHES for lint commands output (chalasr)
+ * bug #19928 [Validator] Update IpValidatorTest data set with a valid reserved IP (jakzal)
+ * bug #19813 [Console] fixed PHP7 Errors are now handled and converted to Exceptions (fonsecas72)
+ * bug #19879 [Form] Incorrect timezone with DateTimeLocalizedStringTransformer (mbeccati)
+ * bug #19878 Fix translation:update command count (tgalopin)
+ * bug #19859 [ClassLoader] Fix ClassCollectionLoader inlining with declare(strict_types=1) (nicolas-grekas)
+ * bug #19780 [FrameworkBundle] Incorrect line break in exception message (500 debug page) (pedroresende)
+ * bug #19595 [form] lazy trans `post_max_size_message`. (aitboudad)
+ * bug #19870 [DI] Fix setting synthetic services on ContainerBuilder (nicolas-grekas)
+ * bug #19848 Revert "minor #19689 [DI] Cleanup array_key_exists (ro0NL)" (nicolas-grekas)
+ * bug #19842 [FrameworkBundle] Check for class existence before is_subclass_of (chalasr)
+ * bug #19827 [BrowserKit] Fix cookie expiration on 32 bit systems (jameshalsall)
+
 * 3.1.4 (2016-09-03)
 
  * bug #19812 [WebProfilerBundle] Fix margin on toolbar route panel when no route is found in the request (jameshalsall)