Add data support for next open hours

[Sti3bas]

This PR fixes Call to a member function toDateTime() on array error when trying to call nextOpen method with:

'monday' => [
    [
        'hours' => '09:00-11:00',
        'data' => ['foobar'],
    ],
    '13:00-19:00',
],

[kylekatarnls]

This particular case is not documented, so I first need to check it's relevant to have it too and would create no conflict.

[kylekatarnls]

Due to operators precedence, $next will always be a boolean (in this case, false), so ! $next instanceof Time will always be true. We are just always skipping a value here as far as I understand. I will try to create a unit test to confirm it.

[Sti3bas]

Yes, you are right.. the strangest thing is that if you just return false from this method all tests will still pass.

protected function findNextOpenInWorkingHours(Time $time, TimeRange $timeRange)
{
    return false;
}

[kylekatarnls]

So we probably need more cases for our unit tests.

[kylekatarnls]

Thanks for your proposal. We will check it and get back in touch soon.

[kylekatarnls]

Thanks, with new changes, no this pass without error. Please try to update to dev-master to see if it solves your problem.

[Sti3bas]

Yes, dev-master solves the problem. Thank you!

[kylekatarnls]

Released in https://github.com/spatie/opening-hours/releases/tag/2.1.0-beta.1