Update to latest php-cs-fixer config.

Update to corresponding style-ci config options. Fix a few code style issues in the process.

.php_cs

@@ -6,10 +6,21 @@ use Symfony\CS\FixerInterface;
 $config = Config::create()
     // use symfony level and extra fixers:
     ->level(Symfony\CS\FixerInterface::SYMFONY_LEVEL)
-    ->fixers(array('align_double_arrow', '-concat_without_spaces', 'concat_with_spaces', 'ordered_use', 'strict'))
+    ->fixers(array(
+        '-concat_without_spaces',
+        '-pre_increment',
+        '-unalign_double_arrow',
+        '-unalign_equals',
+        'align_double_arrow',
+        'concat_with_spaces',
+        'ordered_use',
+        'strict',
+    ))
     ->setUsingLinter(false);
 
 $finder = $config->getFinder()
-    ->in(__DIR__);
+    ->in('bin')
+    ->in('src')
+    ->in('test');
 
 return $config;