Type mismatch when providing show-run-dates argument to ts:list

[marcin-jozwikowski]

Running the ts:list command with --show-run-dates set to any value causes type mismatch error between int and string.

bin/console ts:list --show-run-dates=5
In AbstractScheduledTask.php line 39:

  Rewieer\TaskSchedulerBundle\Task\AbstractScheduledTask::getNextRunDates(): 
     Argument #1 ($counter) must be of type int, string given, called in 
     /var/www/vendor/rewieer/taskschedulerbundle/Command/ListCommand.php on line 63

ts:list [--show-run-dates [SHOW-RUN-DATES]]

A solution is already implemented and will be available in a PR in couple of minutes.