Merge branch 'master' of https://github.com/composer/composer into add_exclude

# By Jordi Boggiano (30) and others
# Via Jordi Boggiano (37) and Morgan Campbell (1)
* 'master' of https://github.com/composer/composer: (83 commits)
  Update 01-basic-usage.md
  Revert 331425bcb3 as well, fixes #3612
  Revert "Disable overwrites when no-ansi is present, fixes #3612"
  Update deps
  Use justinrainbow/json-schema 1.4
  Improved wording
  Fix docs basic-auth => http-basic
  Add test for Generics class
  Single variable for traits and enums
  Use HHVM_VERSION instead of HPHP_VERSION
  Add support for using classmap to autoload Hack enums
  Re-use existing autoloader suffix if available, fixes #3701
  Report Travis CI build success early
  Test on HHVM nightly releases. Allow to fail.
  Make parseJson safer
  Use get home from Config instead of factory
  Fix env override regression, fixes #3820
  [create-project] Used no progress value for dependencies
  Add docBlock and fix CS
  Fix output of first line of progress when output is not decorated, refs #3818
  ...

tests/Composer/Test/Autoload/AutoloadGeneratorTest.php

@@ -106,6 +106,7 @@ class AutoloadGeneratorTest extends TestCase
                         $ret = $ret();
                     }
                 }
+
                 return $ret;
             }));