* 1.3: (44 commits)
  Add a isGranted() function to Silex\Application\SecurityTrait + unit tests
  Type hint against EventDispatcherInterface
  Update usage.rst
  Use PSR-4 for autoloading, works same as the PSR-0 configuration. Use autoload-dev for autoloading tests
  updated CHANGELOG
  Patch debug and caching translator (Symfony 2.6+ with caching enabled).
  Updated year in License
  Update testing.rst
  Add docblock for the $app field
  fixed CS
  Update intro.rst
  Correct exception message when mounting
  fixed compatibility with 2.7
  updated .travis.yml with only maintained Symfony versions
  Link to Monolog provider chapter
  Fix README doc about running unit tests
  add values to parameters copied from symfony docs
  Use the constant to refer to session auth strategy
  Revert "Merge branch '1.2' into 1.3"
  updated deps as Silex 1.2 is not compatible with Symfony 2.7
  ...

Conflicts:
	.travis.yml
	README.rst
	composer.json
	doc/changelog.rst
	doc/providers/security.rst
	doc/usage.rst
	src/Silex/Api/BootableProviderInterface.php
	src/Silex/Application.php
	src/Silex/Provider/FormServiceProvider.php
	src/Silex/Provider/HttpCacheServiceProvider.php
	src/Silex/Provider/SecurityServiceProvider.php
	src/Silex/Provider/Translation/Translator.php
	src/Silex/Provider/TranslationServiceProvider.php
	src/Silex/Provider/ValidatorServiceProvider.php
	tests/Silex/Tests/Provider/MonologServiceProviderTest.php
	tests/Silex/Tests/Provider/TwigServiceProviderTest.php