downgraded to 1.13 api version

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>eu.endermite</groupId>
     <artifactId>CommandWhitelist</artifactId>
-    <version>1.0-SNAPSHOT</version>
+    <version>1.0.4</version>
     <packaging>jar</packaging>
 
     <name>CommandWhitelist</name>

src/main/java/eu/endermite/commandwhitelist/listeners/PlayerCommandPreProcess.java

@@ -12,7 +12,7 @@ import java.util.Map;
 
 public class PlayerCommandPreProcess implements Listener {
 
-    @EventHandler(priority = EventPriority.LOWEST)
+    @EventHandler(priority = EventPriority.HIGHEST)
     public void PlayerCommandSendEvent(org.bukkit.event.player.PlayerCommandPreprocessEvent event) {
         Player player = event.getPlayer();
 
@@ -20,12 +20,15 @@ public class PlayerCommandPreProcess implements Listener {
             return;
         }
 
-        String command = event.getMessage();
+        String command = event.getMessage().toLowerCase();
 
         for (Map.Entry<String, List<String>> s : CommandWhitelist.getConfigCache().getPermList().entrySet()) {
             if (player.hasPermission("commandwhitelist.commands." + s.getKey())) {
                 for (String comm : s.getValue()) {
-                    if (command.startsWith("/" + comm)) {
+                    comm = comm.toLowerCase();
+                    if (command.equalsIgnoreCase("/"+comm))
+                        return;
+                    else if (command.startsWith("/" + comm + " ")) {
                         return;
                     }
                 }
@@ -33,7 +36,6 @@ public class PlayerCommandPreProcess implements Listener {
         }
         event.setCancelled(true);
         player.sendMessage(ChatColor.translateAlternateColorCodes('&', CommandWhitelist.getConfigCache().getPrefix() + " " + CommandWhitelist.getConfigCache().getCommandDenied()));
-
     }
 
 }

src/main/java/eu/endermite/commandwhitelist/listeners/PlayerCommandSend.java

@@ -5,12 +5,11 @@ import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
-
 import java.util.*;
 
 public class PlayerCommandSend implements Listener {
 
-    @EventHandler(priority = EventPriority.HIGH)
+    @EventHandler(priority = EventPriority.HIGHEST)
     public void PlayerCommandSendEvent(org.bukkit.event.player.PlayerCommandSendEvent event) {
         Player player = event.getPlayer();
 

src/main/resources/plugin.yml

@@ -1,7 +1,7 @@
 name: CommandWhitelist
 version: ${project.version}
 main: eu.endermite.commandwhitelist.CommandWhitelist
-api-version: 1.16
+api-version: 1.13
 authors: [YouHaveTrouble]
 description: Control what commands players can use
 permissions: