Int overflow for SCO ID in scoInfo() method

[Gribanov]

Hi Bruno.
Thank you for your library, it is great.
However when I started to play with it I found that it converts sco ids to integer values using intval() function. My client has sco id 3327764235 which is getting converted to -967203061 on windows and php 7.2.6 for example.
Code in question is located here Commands/ScoInfo.php:28. Maybe other methods have similar problems.
Unfortunately I'm not very skilled with github to provide pull-request, so I'm just creating this issue.

Thank you for your hard work on this library.

[brunogasparetto]

Hi.

I will fix this in this weekend.

Thanks!