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/Signature/SignatureProvider.php

@@ -40,6 +40,11 @@ use Aws\Exception\UnresolvedSignatureException;
  */
 class SignatureProvider
 {
+    private static $s3v4SignedServices = [
+        's3' => true,
+        's3control' => true,
+    ];
+
     /**
      * Resolves and signature provider and ensures a non-null return value.
      *
@@ -111,7 +116,7 @@ class SignatureProvider
             switch ($version) {
                 case 's3v4':
                 case 'v4':
-                    return $service === 's3'
+                    return !empty(self::$s3v4SignedServices[$service])
                         ? new S3SignatureV4($service, $region)
                         : new SignatureV4($service, $region);
                 case 'v4-unsigned-body':