fix 8.4 deprecation notices

src/Exceptions/HabboNotFoundException.php

@@ -6,7 +6,7 @@
 
 class HabboNotFoundException extends Exception
 {
-    public function __construct($message, $code = 0, Exception $previous = null)
+    public function __construct($message, $code = 0, ?Exception $previous = null)
     {
         parent::__construct($message, $code, $previous);
     }

src/Exceptions/MaintenanceException.php

@@ -6,7 +6,7 @@
 
 class MaintenanceException extends Exception
 {
-    public function __construct($message, $code = 0, Exception $previous = null)
+    public function __construct($message, $code = 0, ?Exception $previous = null)
     {
         parent::__construct($message, $code, $previous);
     }

src/Exceptions/UserInvalidException.php

@@ -6,7 +6,7 @@
 
 class UserInvalidException extends Exception
 {
-    public function __construct($message, $code = 0, Exception $previous = null)
+    public function __construct($message, $code = 0, ?Exception $previous = null)
     {
         parent::__construct($message, $code, $previous);
     }

src/HabboAPI.php

@@ -62,7 +62,7 @@ public function getProfile(string $id): Profile
      * @param string|null $id The unique ID Habbo uses for their api. Starts with "hh<country code>-" (i.e. "hhus-")
      * @return Photo[] Array of Photo objects
      */
-    public function getPhotos(string $id = null): array
+    public function getPhotos(?string $id = null): array
     {
         return $this->parser->parsePhotos($id);
     }

src/HabboParser.php

@@ -131,11 +131,11 @@ public function parseProfile($id): Profile
      * parsePhotos will collect the public photos for an HHID
      * If no $id is given, it will grab the latest photos of the entire hotel
      *
-     * @param int|null $id
+     * @param string|null $id
      * @return Photo[]
      * @throws Exception
      */
-    public function parsePhotos($id = null): array
+    public function parsePhotos(?string $id = null): array
     {
         $url = (isset($id)) ? '/extradata/public/users/' . $id . '/photos' : '/extradata/public/photos';
         list($data) = $this->_callUrl($this->api_base . $url);

src/HabboParserInterface.php

@@ -9,7 +9,7 @@ public function parseHabbo(string $identifier, bool $useUniqueId = false);
 
     public function parseProfile(string $id);
 
-    public function parsePhotos(string $id = null);
+    public function parsePhotos(?string $id = null);
 
     public function parseAchievements(string $id);
 }