Debugbar is not working with Lumen 10 and barryvdh-debugvar version > v3.14.10

Hi,

I'm using your package within a Lumen application and I got some errors to make it working with version after v3.14.10 and with Lumen 10.

I got an error with an undefined function "booted" on the Application class and an error with the RequestIdGenerator

Lumen version : 10 barryvdh/laravel-debugbar version : v3.15.4 (which triggers the error)

I made a PR in order to fix that, if you can check if it seems ok to you. I didn't test on Laravel but it should be fine ;)

https://github.com/barryvdh/laravel-debugbar/pull/1796

Thanks,