fixes zepto's map not to flatten when used like can.map
fixes zepto's map not to flatten when used like can.map

rasjani/canjs,tracer99/canjs,Psykoral/canjs,tracer99/canjs,Psykoral/canjs,rjgotten/canjs,bitovi/canjs,Psykoral/canjs,rasjani/canjs,rjgotten/canjs,tracer99/canjs,rjgotten/canjs,gsmeets/canjs,bitovi/canjs,rasjani/canjs,rjgotten/canjs,bitovi/canjs,rasjani/canjs,bitovi/canjs,Psykoral/canjs,gsmeets/canjs,gsmeets/canjs