Support Chinese or other non-ASCII characters in command 'winzou:state-machine:debug'

[mayne]

Hello,
Some content is not described in English in metadata in state-machine.php,
when I run command php artisan in winzou:state-machine:debug in cli,
these non-ASCII characters will be escaped as Unicode encoding like "\u7248\u6743\u54c1\u827a\u672f".

By modifying the code

$metadata = json_encode($state['metadata'], JSON_PRETTY_PRINT);

in line 110 in file sebdesign/laravel-state-machine/src/Commands/Debug.php to

$metadata = json_encode($state['metadata'], JSON_PRETTY_PRINT|JSON_UNESCAPED_UNICODE);

problem will be solved.