v2: Updates

* Simplifies & beautifies everything
* Introduces a new Class system.
* Errors are defaulted to AWS's handler.
* New function names & more efficient handling.
* Should fix a majority of the errors.

Please read the README for more!

aws/Aws/S3/Crypto/CryptoParamsTraitV2.php

@@ -0,0 +1,19 @@
+<?php
+namespace Aws\S3\Crypto;
+
+use Aws\Crypto\MaterialsProviderInterfaceV2;
+
+trait CryptoParamsTraitV2
+{
+    use CryptoParamsTrait;
+
+    protected function getMaterialsProvider(array $args)
+    {
+        if ($args['@MaterialsProvider'] instanceof MaterialsProviderInterfaceV2) {
+            return $args['@MaterialsProvider'];
+        }
+
+        throw new \InvalidArgumentException('An instance of MaterialsProviderInterfaceV2'
+            . ' must be passed in the "MaterialsProvider" field.');
+    }
+}