cviebrock/eloquent-sluggable uses a deprecated function

[eduardoarandah]

https://github.com/cviebrock/eloquent-sluggable/blob/3.1.4/src/SluggableServiceProvider.php

line 84:
        $this->app['sluggable.table'] = $this->app->share(function ($app) {

uses app->share, deprecated in laravel 5.4

https://laravel.com/docs/5.4/upgrade

this causes error:

FatalThrowableError

Call to undefined method Illuminate\Foundation\Application::share()