mozart tool compatibility

[olegabr]

🚀 feature request

Description

I'm using mozart tool in my plugin project: https://github.com/coenjacobs/mozart/

It can not process freemius/wordpress-sdk because it prunes the composer.json file: https://github.com/Freemius/wordpress-sdk/blob/master/package.json#L12

> "vendor/bin/mozart" compose
PHP Warning:  file_get_contents(/home/USERNAME/PROJECTDIR/vendor/freemius/wordpress-sdk//composer.json): failed to open stream: No such file or directory in /home/USERNAME/PROJECTDIR/vendor/coenjacobs/mozart/src/Composer/Package.php on line 33
PHP Warning:  file_get_contents(/home/USERNAME/PROJECTDIR/vendor/freemius/wordpress-sdk/composer.json): failed to open stream: No such file or directory in /home/USERNAME/PROJECTDIR/vendor/coenjacobs/mozart/src/Console/Commands/Compose.php on line 171
PHP Notice:  Trying to get property 'name' of non-object in /home/USERNAME/PROJECTDIR/vendor/coenjacobs/mozart/src/Mover.php on line 103

Describe the solution you'd like

Do not prune the composer.json file here please: https://github.com/Freemius/wordpress-sdk/blob/master/package.json#L12