inline fun <T> T.async(crossinline block: T.() -> Unit): T {
  Thread({ block.invoke(this) }).start()
  return this
}

// Current 魔改版
loopIf({ !paused && !stopped && refresh.ended()}) {
  forceRun { onRefresh() }
  timeListeners.forEach { it.check() }
  panel.repaint()
}