Add FlxFlicker.pause() and FlxFlicker.resume()

flixel/effects/FlxFlicker.hx

@@ -144,6 +144,22 @@ class FlxFlicker implements IFlxDestroyable
 		timer = new FlxTimer().start(interval, flickerProgress, Std.int(duration / interval));
 	}
 
+	/**
+	 * Temporarily pause the flickering, so it can be resumed later.
+	 */
+	public function pause():Void {
+		if (timer == null) return;
+		timer.active = false;
+	}
+
+	/**
+	 * Resume the flickering after it has been temporarily paused.
+	 */
+	public function resume():Void {
+		if (timer == null) return;
+		timer.active = true;
+	}
+
 	/**
 	 * Prematurely ends flickering.
 	 */