Why Cartalyst Sentinel? +
Just wondering why was this package chosen over other ones?
Also, is the sentinel package also taking care of all of the authorization for roles?
Just because at the time, it was the most complete package for user and role management.
Yes it also handles authorization of roles. You can see all it can do on their documentation.
Also, not that you're not tied to Sentinel and that new user providers can be added.
I remember the early 4.0.x days and Cartalyst did have a pretty good following.
Since this is tied to the other post I made, I'll try to keep my comments to that one.