Attempt to fix selector memeory leak. Add update checker

common/src/main/java/com/stardust/pio/UncheckedIOException.java

@@ -11,4 +11,9 @@ public class UncheckedIOException extends RuntimeException {
     public UncheckedIOException(IOException cause) {
         super(cause);
     }
+
+    @Override
+    public synchronized IOException getCause() {
+        return (IOException) super.getCause();
+    }
 }