Add connection attributes to pdb config.

Author: gwillz

src/Pdb.php

@@ -318,6 +318,9 @@ public static function connect($config, array $options = [])
         }
 
         try {
+            $options = array_merge($config->attributes, $options);
+
+            // This is essential to how Pdb works, so it's never overridden.
             $options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_EXCEPTION;
 
             if ($config->timeout) {

src/PdbConfig.php

@@ -240,6 +240,14 @@ class PdbConfig extends Collection
      */
     public $session = [];
 
+
+    /**
+     * Connection attributes.
+     *
+     * @var array [ PDO::ATTR_* => value ]
+     */
+    public $attributes = [];
+
     /**
      * Driver specific hacks.
      *