Install pusher/pusher-php-server for Pusher supported

Fix config of fb messenger

Update composer.lock

Try to fix bug

Apply fixes from StyleCI (#79)

Redo vendor:publish

Update style ci config

Remove _migration_helper

Apply fixes from StyleCI (#78)

Update to Laravel 5.6

Fix php requirement

Update to Laravel 5.5

Update to Laravel 5.4

Update .gitignore

Composer update