Implement Illuminate\Support\Arr.

Signed-off-by: crynobone <crynobone@gmail.com>
Reimplement use available rememberToken() schema helper method. Closes #28.

Signed-off-by: crynobone <crynobone@gmail.com>
Don't push code coverage when on hhvm environment.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.1' into 2.2
Merge branch '2.2'