deprecate async

Author: FalsePattern

src/main/java/com/falsepattern/lib/util/AsyncUtil.java

@@ -1,6 +1,5 @@
 package com.falsepattern.lib.util;
 
-import com.falsepattern.lib.StableAPI;
 import com.falsepattern.lib.internal.Tags;
 
 import java.util.concurrent.ExecutorService;
@@ -10,8 +9,10 @@
  * Asynchronous utilities. Notice: you should not abuse this for anything performance-sensitive.
  * The asynchronous worker exists primarily to run code independently of the main thread during loading.
  * You must make sure to solve any potential deadlocks yourself!
+ *
+ * //Deprecated since 0.9.0, removal in 0.10+: Use java-provided async tools instead. CompletableFuture is a nice one.
  */
-@StableAPI(since = "0.8.0")
+@Deprecated
 public class AsyncUtil {
     public static final ExecutorService asyncWorker = Executors.newSingleThreadExecutor((runnable) -> {
         Thread thread = new Thread(runnable);