Made plugin mutable

Author: ByteZ1337

src/main/java/xyz/xenondevs/particle/task/TaskManager.java

@@ -63,7 +63,7 @@ private TaskManager() {
      */
     public int startTask(ParticleTask task) {
         //noinspection CodeBlock2Expr
-        int taskId = Bukkit.getScheduler().runTaskTimerAsynchronously(ReflectionUtils.PLUGIN, () -> {
+        int taskId = Bukkit.getScheduler().runTaskTimerAsynchronously(ReflectionUtils.plugin, () -> {
             ParticleUtils.sendBulk(task.getPackets(), task.getTargetPlayers());
         }, 0, task.getTickDelay()).getTaskId();
 

src/main/java/xyz/xenondevs/particle/utils/PlayerConnectionCache.java

@@ -51,7 +51,7 @@ public final class PlayerConnectionCache implements Listener {
      * as an event listener. The plugin is retrieved from the PluginClassLoader.
      */
     public PlayerConnectionCache() {
-        Bukkit.getServer().getPluginManager().registerEvents(this, ReflectionUtils.PLUGIN);
+        Bukkit.getServer().getPluginManager().registerEvents(this, ReflectionUtils.plugin);
     }
 
     /**

src/main/java/xyz/xenondevs/particle/utils/ReflectionUtils.java

@@ -73,7 +73,7 @@ public final class ReflectionUtils {
     /**
      * The current {@link Plugin} using ParticleLib.
      */
-    public static final Plugin PLUGIN;
+    public static Plugin plugin;
 
     static {
         String serverPath = Bukkit.getServer().getClass().getPackage().getName();
@@ -82,7 +82,7 @@ public final class ReflectionUtils {
         MINECRAFT_VERSION = Integer.parseInt(packageVersion.substring(0, packageVersion.lastIndexOf("_")).replace("_", ".").substring(2));
         NET_MINECRAFT_SERVER_PACKAGE_PATH = "net.minecraft" + (MINECRAFT_VERSION < 17 ? ".server." + version : "");
         CRAFT_BUKKIT_PACKAGE_PATH = "org.bukkit.craftbukkit." + version;
-        PLUGIN = readDeclaredField(PLUGIN_CLASS_LOADER_PLUGIN_FIELD, ReflectionUtils.class.getClassLoader());
+        plugin = readDeclaredField(PLUGIN_CLASS_LOADER_PLUGIN_FIELD, ReflectionUtils.class.getClassLoader());
         PLAYER_CONNECTION_CACHE = new PlayerConnectionCache();
     }