fixed twice-running one-time timer listening

application/core/Callbacks/TimerManager.php

@@ -55,11 +55,20 @@ class TimerManager {
 
 		// Build Timer Listening
 		$listening = new TimerListening($listener, $method, $milliSeconds, $oneTime);
-		array_push($this->timerListenings, $listening);
+		$this->addTimerListening($listening);
 
 		return true;
 	}
 
+	/**
+	 * Add a Listening to the current List of managed Timers
+	 *
+	 * @param TimerListening $timerListening
+	 */
+	public function addTimerListening(TimerListening $timerListening) {
+		array_push($this->timerListenings, $timerListening);
+	}
+
 	/**
 	 * Unregister a Timer Listening
 	 *