⬇️ Prefer stable versions on dependencies

See #154

📚 Document and test new artisan tasks

Merge pull request lorisleiva#148 from adevade/fix-optimize-clear-com…

…mand

Change optimize:clean to optimize:clear

✅ Fix Lumen tests

📚 Add new event cache and view cache tasks

✅ Make test pass new dependencies

Merge pull request lorisleiva#102 from JeffBeltran/master

Add Nova Publish Command

◀️ Revert PR lorisleiva#100

Merge pull request lorisleiva#100 from BoGnY/master

Updated composer.json

⬆️ Upgrade to Laravel 5.8

Update dependencies to fit Laravel 5.8