Small fixes/cleanup

Signed-off-by: Diederik de Groot <dkgroot@talon.nl>

lib/Crypto/Crypto.php

@@ -10,3 +10,4 @@ class Crypto {
                 .hashAsBase64($hashAlg);
     }
 }
+?>

lib/Crypto/Signer.php

@@ -1,7 +1,7 @@
 <?php
 declare(strict_types=1);
 
-namespace PROVISION\Signer;
+namespace PROVISION\Crypto;
 
 class Signer {
 }