Merge pull request #341 from chou666/bugfix/deprecation

Fix deprectation notice

Author: aaronm67

src/Vimeo/Vimeo.php

@@ -63,7 +63,7 @@ class Vimeo
      * @param string|null $access_token Your access token. Can be found on developer.vimeo.com/apps or generated using OAuth 2.
      * @param TusClientFactory|null $tus_client_interface Your tus client that will be used.
      */
-    public function __construct(string $client_id, string $client_secret, string $access_token = null, TusClientFactory $tus_client_factory = null)
+    public function __construct(string $client_id, string $client_secret, ?string $access_token = null, ?TusClientFactory $tus_client_factory = null)
     {
         $this->_client_id = $client_id;
         $this->_client_secret = $client_secret;
@@ -205,7 +205,7 @@ public function setCURLOptions(array $curl_opts = array()): void
      * @param string|null $proxy_port Optional number of port.
      * @param string|null $proxy_userpwd Optional `user:password` authentication.
      */
-    public function setProxy(string $proxy_address, string $proxy_port = null, string $proxy_userpwd = null): void
+    public function setProxy(string $proxy_address, ?string $proxy_port = null, ?string $proxy_userpwd = null): void
     {
         $this->CURL_DEFAULTS[CURLOPT_PROXY] = $proxy_address;
         if ($proxy_port) {