Merge pull request #51 from zigzagdev/feature/nullable-parameter-typing-fix

Implement PHP 8.4-specific deprecation

Author: freekmurze

src/PublicStream.php

@@ -64,7 +64,7 @@ public function setLocale(string $lang): self
         return $this;
     }
 
-    public function startListening(Sets $sets = null): void
+    public function startListening(?Sets $sets = null): void
     {
         // Delete old rules
         Rule::deleteBulk(...Rule::all());

src/UserStream.php

@@ -32,7 +32,7 @@ public function onEvent(callable $onTweet): static
         return $this;
     }
 
-    public function startListening(Sets $sets = null): void
+    public function startListening(?Sets $sets = null): void
     {
         // Delete old rules
         Rule::deleteBulk(...Rule::all());