First set of upgrade to 5.3 stuff.

config/services.php

@@ -1,6 +1,4 @@
 <?php
-declare(strict_types = 1);
-
 
 return [
 
@@ -10,7 +8,7 @@ return [
     |--------------------------------------------------------------------------
     |
     | This file is for storing the credentials for third party services such
-    | as Stripe, Mailgun, Mandrill, and others. This file provides a sane
+    | as Stripe, Mailgun, SparkPost and others. This file provides a sane
     | default location for this type of information, allowing packages
     | to have a conventional place to find your various credentials.
     |
@@ -21,19 +19,19 @@ return [
         'secret' => env('MAILGUN_SECRET'),
     ],
 
-    'mandrill' => [
-        'secret' => env('MANDRILL_SECRET'),
-    ],
-
     'ses' => [
-        'key'    => env('SES_KEY'),
+        'key' => env('SES_KEY'),
         'secret' => env('SES_SECRET'),
         'region' => 'us-east-1',
     ],
 
+    'sparkpost' => [
+        'secret' => env('SPARKPOST_SECRET'),
+    ],
+
     'stripe' => [
-        'model'  => FireflyIII\User::class,
-        'key'    => env('STRIPE_KEY'),
+        'model' => FireflyIII\User::class,
+        'key' => env('STRIPE_KEY'),
         'secret' => env('STRIPE_SECRET'),
     ],