release for laravel 9

correct many countries name and continent

upgrade fro laravel 8.0

update for laravel 7

Merge pull request #46 from khsing/v6.x

upgrade package for laravel-6.x

Merge pull request #22 from abhishek6262/master

Fix corrupted composer.json file

* rename .php_cs.dist to .php_cs

* fix #12, link cities back to Serbia
* add Montenegro as country and link capital
* fix most iso-3166 alpha 3 code
* add contributions in readme.

Merge pull request #8 from systemovich/sqlite_foreign_key_checks

feat(database): Allow database seeder to work on Sqlite

Merge pull request #6 from yswtrue/master

bugfix city relationship

change 兰州市 to 兰州