Just so people with no coding experience can use it

.poggit.yml

@@ -0,0 +1,7 @@
+--- # Poggit-CI Manifest. Open the CI at https://poggit.pmmp.io/ci/da123rrell/Alias
+branches:
+- master
+projects:
+  Alias:
+    path: ""
+...

plugin.yml

@@ -1,6 +1,6 @@
 name: Alias
 version: 2.0
-api: [2.0.0]
+api: [2.0.0, 3.0.0, 3.0.0-ALPHA1, 3.0.0-ALPHA2, 3.0.0-ALPHA3, 3.0.0-ALPHA4, 3.0.0-ALPHA5, 3.0.0-ALPHA6, 4.0.0]
 author: ZacHack
 description: Allows users to view all the usernames one user has used
 main: Alias\MainClass

src/Alias/MainClass.php

@@ -89,7 +89,7 @@ public function onJoin(PlayerJoinEvent $event){
 			$ipfile->save();
 		}
 	}
-	public function onCommand(CommandSender $sender, Command $command, $label, array $args){
+	public function onCommand(CommandSender $sender, Command $command, string $label, array $args): bool{
 		switch($command->getName()){
 			case "alias":
 				if(!isset($args[0])){