Add Laravel 8 support

Thanks to @topclaudy for the PR

Change how the admin1codes table is created

admin1codes may have non-unique names
#13

Laravel 7 Compatibility

Added Laravel 7 compatibility thanks to @topclaudy
#12

Laravel 6.0 composer update

Composer changes to accomodate laravel 6

Very small changes to accommodate data better

Increased some field ranges

First release

Now some people have tested and small bugs here and there are fixed. It is probably time to make a release.