Package	krewfw.utils.as3
Class	public class KrewAsync
Inheritance	KrewAsync Object

Flexible asynchronous tasker. Usage:

         //--- Basic sequential task
         var async:KrewAsync = new KrewAsync({
             serial : [function_1, function_2, function_3],
             error  : _onErrorHandler,
             anyway : _onFinallyHandler
         });
         async.go();
                   //--- Parallel task
         var async:KrewAsync = new KrewAsync({
             parallel: [function_1, function_2, function_3],
             error   : _onErrorHandler,
             anyway  : _onFinallyHandler
         });
         async.go();
              Throws error if both 'serial' and 'parallel' are specified.
                   //--- Function receives KrewAsync instance,
         //    and you should call done() or fail().
     +
         var async:KrewAsync = new KrewAsync({
             serial: [
                 function(async:KrewAsync):void {
                     if (TASK_IS_SUCCEEDED) {
                         async.done();
                     } else {
                         async.fail();
                     }
                 }
             ]
         });
                   //--- Sub task
         var async:KrewAsync = new KrewAsync({
             serial: [
                 function_1,
                 function_2,
                 {parallel: [
                     function_3,
                     function_4,
                     {serial: [
                         function_5,
                         function_6
                     ]}
                 ]},
                 function_7
             ],
             error  : _onErrorHandler,
             anyway : _onFinallyHandler
         });
         async.go();
              [Sequence]:
                       |3 ------>|
                       |         |
             1 -> 2 -> |4 ------>| -> 7 -> anyway
                       |         |
                       |5 -> 6 ->|
          

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