diff --git a/CHANGELOG.md b/CHANGELOG.md
index bf447af40..8126cf5b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+### [1.3.1] - 2017-01-07
+
+  * Fixed dist downloads from Bitbucket
+  * Fixed some regressions related to xdebug disabling
+  * Fixed `--minor-only` flag in `outdated` command
+  * Fixed handling of config.platform.php which did not replace other php-* package's versions
+
 ### [1.3.0] - 2016-12-24
 
   * Fixed handling of annotated git tags vs lightweight tags leading to useless updates sometimes
@@ -477,6 +484,7 @@
 
   * Initial release
 
+[1.3.1]: https://github.com/composer/composer/compare/1.3.0...1.3.1
 [1.3.0]: https://github.com/composer/composer/compare/1.3.0-RC...1.3.0
 [1.3.0-RC]: https://github.com/composer/composer/compare/1.2.4...1.3.0-RC
 [1.2.4]: https://github.com/composer/composer/compare/1.2.3...1.2.4
diff --git a/src/Composer/Plugin/PluginManager.php b/src/Composer/Plugin/PluginManager.php
index 80b5b91ea..bb67e03a6 100644
--- a/src/Composer/Plugin/PluginManager.php
+++ b/src/Composer/Plugin/PluginManager.php
@@ -223,9 +223,13 @@ class PluginManager
     /**
      * Adds a plugin, activates it and registers it with the event dispatcher
      *
+     * Ideally plugin packages should be registered via registerPackage, but if you use Composer
+     * programmatically and want to register a plugin class directly this is a valid way
+     * to do it.
+     *
      * @param PluginInterface $plugin plugin instance
      */
-    private function addPlugin(PluginInterface $plugin)
+    public function addPlugin(PluginInterface $plugin)
     {
         $this->io->writeError('Loading plugin '.get_class($plugin), true, IOInterface::DEBUG);
         $this->plugins[] =  $plugin;
diff --git a/src/Composer/Repository/ArtifactRepository.php b/src/Composer/Repository/ArtifactRepository.php
index 50a08241f..a8002123a 100644
--- a/src/Composer/Repository/ArtifactRepository.php
+++ b/src/Composer/Repository/ArtifactRepository.php
@@ -27,6 +27,7 @@ class ArtifactRepository extends ArrayRepository implements ConfigurableReposito
 
     protected $lookup;
     protected $repoConfig;
+    private $io;
 
     public function __construct(array $repoConfig, IOInterface $io)
     {
diff --git a/src/Composer/Repository/Vcs/GitHubDriver.php b/src/Composer/Repository/Vcs/GitHubDriver.php
index b33b99916..ed4155c01 100644
--- a/src/Composer/Repository/Vcs/GitHubDriver.php
+++ b/src/Composer/Repository/Vcs/GitHubDriver.php
@@ -152,14 +152,16 @@ class GitHubDriver extends VcsDriver
             }
 
             $composer = $this->getBaseComposerInformation($identifier);
+            if ($composer) {
 
-            // specials for github
-            if (!isset($composer['support']['source'])) {
-                $label = array_search($identifier, $this->getTags()) ?: array_search($identifier, $this->getBranches()) ?: $identifier;
-                $composer['support']['source'] = sprintf('https://%s/%s/%s/tree/%s', $this->originUrl, $this->owner, $this->repository, $label);
-            }
-            if (!isset($composer['support']['issues']) && $this->hasIssues) {
-                $composer['support']['issues'] = sprintf('https://%s/%s/%s/issues', $this->originUrl, $this->owner, $this->repository);
+                // specials for github
+                if (!isset($composer['support']['source'])) {
+                    $label = array_search($identifier, $this->getTags()) ?: array_search($identifier, $this->getBranches()) ?: $identifier;
+                    $composer['support']['source'] = sprintf('https://%s/%s/%s/tree/%s', $this->originUrl, $this->owner, $this->repository, $label);
+                }
+                if (!isset($composer['support']['issues']) && $this->hasIssues) {
+                    $composer['support']['issues'] = sprintf('https://%s/%s/%s/issues', $this->originUrl, $this->owner, $this->repository);
+                }
             }
 
             if ($this->shouldCache($identifier)) {
diff --git a/src/Composer/XdebugHandler.php b/src/Composer/XdebugHandler.php
index a55d37368..fb0570925 100644
--- a/src/Composer/XdebugHandler.php
+++ b/src/Composer/XdebugHandler.php
@@ -136,6 +136,7 @@ class XdebugHandler
     {
         $this->tmpIni = '';
         $iniPaths = IniHelper::getAll();
+        $additional = count($iniPaths) > 1;
 
         if (empty($iniPaths[0])) {
             // There is no loaded ini
@@ -143,7 +144,7 @@ class XdebugHandler
         }
 
         if ($this->writeTmpIni($iniPaths)) {
-            return $this->setEnvironment($iniPaths);
+            return $this->setEnvironment($additional, $iniPaths);
         }
 
         return false;
@@ -193,15 +194,14 @@ class XdebugHandler
     /**
      * Returns true if the restart environment variables were set
      *
+     * @param bool $additional Whether there were additional inis
      * @param array $iniPaths Locations used by the current prcoess
      *
      * @return bool
      */
-    private function setEnvironment(array $iniPaths)
+    private function setEnvironment($additional, array $iniPaths)
     {
         // Set scan dir to an empty value if additional ini files were used
-        $additional = count($iniPaths) > 1;
-
         if ($additional && !putenv('PHP_INI_SCAN_DIR=')) {
             return false;
         }