Merge pull request #111 from thinkshout/guzzle-updates-221

Co-Authored by: @calebtr-metro

Author: aprice42

composer.json

@@ -1,16 +1,17 @@
 {
   "name": "thinkshout/mailchimp-api-php",
+  "version": "3.0.0",
   "type": "library",
   "description": "PHP library for v3 of the MailChimp API",
   "keywords": ["mailchimp", "mail"],
   "homepage": "https://github.com/thinkshout/mailchimp-api-php",
   "license": "GPL-2.0-or-later",
   "require": {
     "php": ">=5.4.0",
-    "guzzlehttp/guzzle": "^6.2.1|^7.0.0"
+    "guzzlehttp/guzzle": "^6.5.8|^7.4.5"
   },
   "require-dev": {
-    "phpunit/phpunit": "^6.2.2"
+    "phpunit/phpunit": "^6.2.2|^7.0|^8.0|^9.0"
   },
   "autoload": {
     "psr-4": {

tests/src/MailchimpTestHttpResponse.php

@@ -2,15 +2,11 @@
 
 namespace Mailchimp\Tests;
 
+use GuzzleHttp\Psr7\Response;
+
 /**
  * Test HTTP Response.
  *
  * @package Mailchimp\Tests
  */
-class MailchimpTestHttpResponse extends \GuzzleHttp\Psr7\Response {
-
-  public function getBody() {
-    return '{}';
-  }
-
-}
+class MailchimpTestHttpResponse extends Response {}